645339596 has 24 divisors (see below), whose sum is σ = 1241016336. Its totient is φ = 291192320.

The previous prime is 645339559. The next prime is 645339613. The reversal of 645339596 is 695933546.

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, 47501 + ... + 59556.

It is an arithmetic number, because the mean of its divisors is an integer number (51709014).

Almost surely, 2^645339596 is an apocalyptic number.

It is an amenable number.

645339596 is a deficient number, since it is larger than the sum of its proper divisors (595676740).

645339596 is a wasteful number, since it uses less digits than its factorization.

645339596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107209 (or 107207 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 50.

The square root of 645339596 is about 25403.5351083270. The cubic root of 645339596 is about 864.1638688810.

The spelling of 645339596 in words is "six hundred forty-five million, three hundred thirty-nine thousand, five hundred ninety-six".