64568137 has 8 divisors (see below), whose sum is σ = 68312000. Its totient is φ = 60858864.

The previous prime is 64568113. The next prime is 64568143. The reversal of 64568137 is 73186546.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64568137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64568137.

It is not an unprimeable number, because it can be changed into a prime (64568167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4758 + ... + 12319.

It is an arithmetic number, because the mean of its divisors is an integer number (8539000).

Almost surely, 2^64568137 is an apocalyptic number.

It is an amenable number.

64568137 is a deficient number, since it is larger than the sum of its proper divisors (3743863).

64568137 is a wasteful number, since it uses less digits than its factorization.

64568137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17295.

The product of its digits is 120960, while the sum is 40.

The square root of 64568137 is about 8035.4301067211. The cubic root of 64568137 is about 401.1801335379.

The spelling of 64568137 in words is "sixty-four million, five hundred sixty-eight thousand, one hundred thirty-seven".