64867956 has 24 divisors (see below), whose sum is σ = 155450400. Its totient is φ = 21038112.

The previous prime is 64867931. The next prime is 64867967. The reversal of 64867956 is 65976846.

It is a junction number, because it is equal to n+sod(n) for n = 64867899 and 64867908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72606 + ... + 73493.

It is an arithmetic number, because the mean of its divisors is an integer number (6477100).

Almost surely, 2^64867956 is an apocalyptic number.

It is an amenable number.

64867956 is an abundant number, since it is smaller than the sum of its proper divisors (90582444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64867956 is a wasteful number, since it uses less digits than its factorization.

64867956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146143 (or 146141 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 64867956 is about 8054.0645639329. The cubic root of 64867956 is about 401.8001283588.

The spelling of 64867956 in words is "sixty-four million, eight hundred sixty-seven thousand, nine hundred fifty-six".