664202044 has 24 divisors (see below), whose sum is σ = 1268805888. Its totient is φ = 301723440.

The previous prime is 664202023. The next prime is 664202081. The reversal of 664202044 is 440202466.

It is a congruent number.

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, 88029 + ... + 95275.

It is an arithmetic number, because the mean of its divisors is an integer number (52866912).

Almost surely, 2^664202044 is an apocalyptic number.

It is an amenable number.

664202044 is a deficient number, since it is larger than the sum of its proper divisors (604603844).

664202044 is a wasteful number, since it uses less digits than its factorization.

664202044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345 (or 9343 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 664202044 is about 25772.1175691871. The cubic root of 664202044 is about 872.5026122860.

The spelling of 664202044 in words is "six hundred sixty-four million, two hundred two thousand, forty-four".