64407572 has 12 divisors (see below), whose sum is σ = 112805280. Its totient is φ = 32177496.

The previous prime is 64407571. The next prime is 64407589. The reversal of 64407572 is 27570446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64407571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422 + ... + 11357.

It is an arithmetic number, because the mean of its divisors is an integer number (9400440).

Almost surely, 2^64407572 is an apocalyptic number.

It is an amenable number.

64407572 is a deficient number, since it is larger than the sum of its proper divisors (48397708).

64407572 is a wasteful number, since it uses less digits than its factorization.

64407572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13150 (or 13148 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 64407572 is about 8025.4328232189. The cubic root of 64407572 is about 400.8473122210.

The spelling of 64407572 in words is "sixty-four million, four hundred seven thousand, five hundred seventy-two".