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540245665 = 5317340849
BaseRepresentation
bin100000001100110…
…111111010100001
31101122120022201201
4200030313322201
52101300330130
6125335201201
716250004151
oct4014677241
91348508651
10540245665
11257a55623
12130b16201
1387c066bb
1451a70761
1532667bca
hex20337ea1

540245665 has 8 divisors (see below), whose sum is σ = 650341800. Its totient is φ = 430831872.

The previous prime is 540245659. The next prime is 540245701. The reversal of 540245665 is 566542045.

It can be written as a sum of positive squares in 4 ways, for example, as 23001616 + 517244049 = 4796^2 + 22743^2 .

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 540245665 - 25 = 540245633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168840 + ... + 172009.

It is an arithmetic number, because the mean of its divisors is an integer number (81292725).

Almost surely, 2540245665 is an apocalyptic number.

It is an amenable number.

540245665 is a deficient number, since it is larger than the sum of its proper divisors (110096135).

540245665 is a wasteful number, since it uses less digits than its factorization.

540245665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341171.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 540245665 is about 23243.1853453867. The cubic root of 540245665 is about 814.4487546649.

The spelling of 540245665 in words is "five hundred forty million, two hundred forty-five thousand, six hundred sixty-five".

Divisors: 1 5 317 1585 340849 1704245 108049133 540245665