645596926 has 16 divisors (see below), whose sum is σ = 1067142384. Its totient is φ = 291037824.

The previous prime is 645596921. The next prime is 645596929. The reversal of 645596926 is 629695546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645596921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287611 + ... + 289846.

It is an arithmetic number, because the mean of its divisors is an integer number (66696399).

Almost surely, 2^645596926 is an apocalyptic number.

645596926 is a deficient number, since it is larger than the sum of its proper divisors (421545458).

645596926 is a wasteful number, since it uses less digits than its factorization.

645596926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577515.

The product of its digits is 3499200, while the sum is 52.

The square root of 645596926 is about 25408.5994497926. The cubic root of 645596926 is about 864.2787157714.

The spelling of 645596926 in words is "six hundred forty-five million, five hundred ninety-six thousand, nine hundred twenty-six".