645053360 has 40 divisors (see below), whose sum is σ = 1714000416. Its totient is φ = 221160960.

The previous prime is 645053359. The next prime is 645053371. The reversal of 645053360 is 63350546.

It is a tau number, because it is divible by the number of its divisors (40).

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, 575381 + ... + 576500.

Almost surely, 2^645053360 is an apocalyptic number.

It is an amenable number.

645053360 is an abundant number, since it is smaller than the sum of its proper divisors (1068947056).

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

645053360 is a wasteful number, since it uses less digits than its factorization.

645053360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151901 (or 1151895 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 645053360 is about 25397.9007006485. The cubic root of 645053360 is about 864.0360853127.

The spelling of 645053360 in words is "six hundred forty-five million, fifty-three thousand, three hundred sixty".