64925731 has 8 divisors (see below), whose sum is σ = 70066080. Its totient is φ = 59806272.

The previous prime is 64925719. The next prime is 64925761. The reversal of 64925731 is 13752946.

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 64925731 - 2⁵ = 64925699 is a prime.

It is a super-2 number, since 2×64925731² = 8430701091768722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64925701) 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, 1575 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (8758260).

Almost surely, 2^64925731 is an apocalyptic number.

64925731 is a deficient number, since it is larger than the sum of its proper divisors (5140349).

64925731 is a wasteful number, since it uses less digits than its factorization.

64925731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10445.

The product of its digits is 45360, while the sum is 37.

The square root of 64925731 is about 8057.6504640000. The cubic root of 64925731 is about 401.9193814557.

It can be divided in two parts, 64925 and 731, that added together give a palindrome (65656).

The spelling of 64925731 in words is "sixty-four million, nine hundred twenty-five thousand, seven hundred thirty-one".