664208808 has 32 divisors (see below), whose sum is σ = 1717783200. Its totient is φ = 213768128.

The previous prime is 664208807. The next prime is 664208873. The reversal of 664208808 is 808802466.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 664208808.

It is not an unprimeable number, because it can be changed into a prime (664208807) 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, 476466 + ... + 477857.

It is an arithmetic number, because the mean of its divisors is an integer number (53680725).

Almost surely, 2^664208808 is an apocalyptic number.

It is an amenable number.

664208808 is an abundant number, since it is smaller than the sum of its proper divisors (1053574392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664208808 is a wasteful number, since it uses less digits than its factorization.

664208808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954361 (or 954357 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 664208808 is about 25772.2487959433. The cubic root of 664208808 is about 872.5055740292.

The spelling of 664208808 in words is "six hundred sixty-four million, two hundred eight thousand, eight hundred eight".