64507836 has 12 divisors (see below), whose sum is σ = 150518312. Its totient is φ = 21502608.

The previous prime is 64507819. The next prime is 64507853. The reversal of 64507836 is 63870546.

It is an interprime number because it is at equal distance from previous prime (64507819) and next prime (64507853).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×64507836² = 8322521810805792, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64507794 and 64507803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2687815 + ... + 2687838.

Almost surely, 2^64507836 is an apocalyptic number.

It is an amenable number.

64507836 is an abundant number, since it is smaller than the sum of its proper divisors (86010476).

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

64507836 is a wasteful number, since it uses less digits than its factorization.

64507836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375660 (or 5375658 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 64507836 is about 8031.6770353395. The cubic root of 64507836 is about 401.0552055719.

The spelling of 64507836 in words is "sixty-four million, five hundred seven thousand, eight hundred thirty-six".