645036360604 has 12 divisors (see below), whose sum is σ = 1137430529928. Its totient is φ = 320056209200.

The previous prime is 645036360583. The next prime is 645036360649. The reversal of 645036360604 is 406063630546.

It is a happy number.

645036360604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615492187 + ... + 615493234.

It is an arithmetic number, because the mean of its divisors is an integer number (94785877494).

Almost surely, 2^645036360604 is an apocalyptic number.

It is an amenable number.

645036360604 is a deficient number, since it is larger than the sum of its proper divisors (492394169324).

645036360604 is a wasteful number, since it uses less digits than its factorization.

645036360604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230985556 (or 1230985554 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 645036360604 in words is "six hundred forty-five billion, thirty-six million, three hundred sixty thousand, six hundred four".