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8657240641 = 72353771681
BaseRepresentation
bin10000001000000001…
…10000001001000001
3211100100010101120021
420010000300021001
5120212223200031
63551014413441
7424351221430
oct100400601101
924310111507
108657240641
113742872035
121817361281
13a7c7609ca
145c1ab1117
1535a073511
hex204030241

8657240641 has 8 divisors (see below), whose sum is σ = 10324162944. Its totient is φ = 7097861760.

The previous prime is 8657240629. The next prime is 8657240653. The reversal of 8657240641 is 1460427568.

It is an interprime number because it is at equal distance from previous prime (8657240629) and next prime (8657240653).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8657240641 - 25 = 8657240609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8657240621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26885680 + ... + 26886001.

It is an arithmetic number, because the mean of its divisors is an integer number (1290520368).

Almost surely, 28657240641 is an apocalyptic number.

It is an amenable number.

8657240641 is a deficient number, since it is larger than the sum of its proper divisors (1666922303).

8657240641 is a wasteful number, since it uses less digits than its factorization.

8657240641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53771711.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 8657240641 is about 93044.2939733544. The cubic root of 8657240641 is about 2053.3350940600.

The spelling of 8657240641 in words is "eight billion, six hundred fifty-seven million, two hundred forty thousand, six hundred forty-one".

Divisors: 1 7 23 161 53771681 376401767 1236748663 8657240641