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68750023 = 1723916921
BaseRepresentation
bin1000001100100…
…00101011000111
311210100212022011
410012100223013
5120100000043
610453315051
71463236246
oct406205307
9153325264
1068750023
1135897a01
121b035a87
13113218b4
1491b895d
15608059d
hex4190ac7

68750023 has 8 divisors (see below), whose sum is σ = 73103040. Its totient is φ = 64431360.

The previous prime is 68750021. The next prime is 68750029. The reversal of 68750023 is 32005786.

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

It is not a de Polignac number, because 68750023 - 21 = 68750021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68750021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4398 + ... + 12523.

It is an arithmetic number, because the mean of its divisors is an integer number (9137880).

Almost surely, 268750023 is an apocalyptic number.

68750023 is a deficient number, since it is larger than the sum of its proper divisors (4353017).

68750023 is a wasteful number, since it uses less digits than its factorization.

68750023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17177.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 68750023 is about 8291.5633628406. The cubic root of 68750023 is about 409.6606809837.

The spelling of 68750023 in words is "sixty-eight million, seven hundred fifty thousand, twenty-three".

Divisors: 1 17 239 4063 16921 287657 4044119 68750023