668801320 has 32 divisors (see below), whose sum is σ = 1641604320. Its totient is φ = 243200320.

The previous prime is 668801293. The next prime is 668801321. The reversal of 668801320 is 23108866.

668801320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (668801321) 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, 759562 + ... + 760441.

It is an arithmetic number, because the mean of its divisors is an integer number (51300135).

Almost surely, 2^668801320 is an apocalyptic number.

It is an amenable number.

668801320 is an abundant number, since it is smaller than the sum of its proper divisors (972803000).

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

668801320 is a wasteful number, since it uses less digits than its factorization.

668801320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520025 (or 1520021 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 668801320 is about 25861.1933212681. The cubic root of 668801320 is about 874.5118670575.

The spelling of 668801320 in words is "six hundred sixty-eight million, eight hundred one thousand, three hundred twenty".