664244246 has 16 divisors (see below), whose sum is σ = 1031518800. Its totient is φ = 320422368.

The previous prime is 664244227. The next prime is 664244257. The reversal of 664244246 is 642442466.

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, 87956 + ... + 95208.

It is an arithmetic number, because the mean of its divisors is an integer number (64469925).

Almost surely, 2^664244246 is an apocalyptic number.

664244246 is a deficient number, since it is larger than the sum of its proper divisors (367274554).

664244246 is a wasteful number, since it uses less digits than its factorization.

664244246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863.

The product of its digits is 221184, while the sum is 38.

The square root of 664244246 is about 25772.9363092373. The cubic root of 664244246 is about 872.5210908879.

The spelling of 664244246 in words is "six hundred sixty-four million, two hundred forty-four thousand, two hundred forty-six".