645572360 has 32 divisors (see below), whose sum is σ = 1460160000. Its totient is φ = 256873920.

The previous prime is 645572357. The next prime is 645572371. The reversal of 645572360 is 63275546.

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, 34610 + ... + 49889.

It is an arithmetic number, because the mean of its divisors is an integer number (45630000).

Almost surely, 2^645572360 is an apocalyptic number.

It is an amenable number.

645572360 is an abundant number, since it is smaller than the sum of its proper divisors (814587640).

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

645572360 is a wasteful number, since it uses less digits than its factorization.

645572360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84701 (or 84697 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 645572360 is about 25408.1160261834. The cubic root of 645572360 is about 864.2677532345.

The spelling of 645572360 in words is "six hundred forty-five million, five hundred seventy-two thousand, three hundred sixty".