64656132 has 12 divisors (see below), whose sum is σ = 150864336. Its totient is φ = 21552040.

The previous prime is 64656121. The next prime is 64656143. The reversal of 64656132 is 23165646.

It is an interprime number because it is at equal distance from previous prime (64656121) and next prime (64656143).

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

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 64656093 and 64656102.

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, 2693994 + ... + 2694017.

It is an arithmetic number, because the mean of its divisors is an integer number (12572028).

Almost surely, 2^64656132 is an apocalyptic number.

It is an amenable number.

64656132 is an abundant number, since it is smaller than the sum of its proper divisors (86208204).

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

64656132 is a wasteful number, since it uses less digits than its factorization.

64656132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388018 (or 5388016 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 64656132 is about 8040.9036805573. The cubic root of 64656132 is about 401.3622967683.

The spelling of 64656132 in words is "sixty-four million, six hundred fifty-six thousand, one hundred thirty-two".