64515572 has 24 divisors (see below), whose sum is σ = 123527712. Its totient is φ = 29239200.

The previous prime is 64515569. The next prime is 64515593. The reversal of 64515572 is 27551546.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447 + ... + 18377.

It is an arithmetic number, because the mean of its divisors is an integer number (5146988).

Almost surely, 2^64515572 is an apocalyptic number.

It is an amenable number.

64515572 is a deficient number, since it is larger than the sum of its proper divisors (59012140).

64515572 is a wasteful number, since it uses less digits than its factorization.

64515572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319 (or 4317 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 64515572 is about 8032.1586139717. The cubic root of 64515572 is about 401.0712369011.

The spelling of 64515572 in words is "sixty-four million, five hundred fifteen thousand, five hundred seventy-two".