664301066 has 64 divisors (see below), whose sum is σ = 1261370880. Its totient is φ = 257826240.

The previous prime is 664301051. The next prime is 664301087. The reversal of 664301066 is 660103466.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232241 + ... + 235083.

It is an arithmetic number, because the mean of its divisors is an integer number (19708920).

Almost surely, 2^664301066 is an apocalyptic number.

664301066 is a deficient number, since it is larger than the sum of its proper divisors (597069814).

664301066 is a wasteful number, since it uses less digits than its factorization.

664301066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 664301066 is about 25774.0386047666. The cubic root of 664301066 is about 872.5459689028.

The spelling of 664301066 in words is "six hundred sixty-four million, three hundred one thousand, sixty-six".