64646552 has 16 divisors (see below), whose sum is σ = 121500000. Its totient is φ = 32246560.

The previous prime is 64646513. The next prime is 64646567. The reversal of 64646552 is 25564646.

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, 5927 + ... + 12822.

It is an arithmetic number, because the mean of its divisors is an integer number (7593750).

Almost surely, 2^64646552 is an apocalyptic number.

It is an amenable number.

64646552 is a deficient number, since it is larger than the sum of its proper divisors (56853448).

64646552 is a wasteful number, since it uses less digits than its factorization.

64646552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19186 (or 19182 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 64646552 is about 8040.3079543013. The cubic root of 64646552 is about 401.3424727104.

The spelling of 64646552 in words is "sixty-four million, six hundred forty-six thousand, five hundred fifty-two".