64386692 has 24 divisors (see below), whose sum is σ = 114511320. Its totient is φ = 31673600.

The previous prime is 64386671. The next prime is 64386703. The reversal of 64386692 is 29668346.

It can be written as a sum of positive squares in 4 ways, for example, as 56911936 + 7474756 = 7544^2 + 2734^2 .

It is a super-2 number, since 2×64386692² = 8291292213405728, which contains 22 as substring.

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, 79184 + ... + 79992.

It is an arithmetic number, because the mean of its divisors is an integer number (4771305).

Almost surely, 2^64386692 is an apocalyptic number.

It is an amenable number.

64386692 is a deficient number, since it is larger than the sum of its proper divisors (50124628).

64386692 is a wasteful number, since it uses less digits than its factorization.

64386692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1109 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 64386692 is about 8024.1318533534. The cubic root of 64386692 is about 400.8039912458.

The spelling of 64386692 in words is "sixty-four million, three hundred eighty-six thousand, six hundred ninety-two".