664033606 has 16 divisors (see below), whose sum is σ = 1033579008. Its totient is φ = 319725000.

The previous prime is 664033589. The next prime is 664033607. The reversal of 664033606 is 606330466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664033607) 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, 48270 + ... + 60481.

It is an arithmetic number, because the mean of its divisors is an integer number (64598688).

Almost surely, 2^664033606 is an apocalyptic number.

664033606 is a deficient number, since it is larger than the sum of its proper divisors (369545402).

664033606 is a wasteful number, since it uses less digits than its factorization.

664033606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108867.

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 664033606 is about 25768.8495280639. The cubic root of 664033606 is about 872.4288520896.

The spelling of 664033606 in words is "six hundred sixty-four million, thirty-three thousand, six hundred six".