668954274 has 16 divisors (see below), whose sum is σ = 1346889600. Its totient is φ = 221487920.

The previous prime is 668954269. The next prime is 668954291. The reversal of 668954274 is 472459866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373242 + ... + 375029.

It is an arithmetic number, because the mean of its divisors is an integer number (84180600).

Almost surely, 2^668954274 is an apocalyptic number.

668954274 is an abundant number, since it is smaller than the sum of its proper divisors (677935326).

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

668954274 is a wasteful number, since it uses less digits than its factorization.

668954274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748425.

The product of its digits is 2903040, while the sum is 51.

The square root of 668954274 is about 25864.1503630025. The cubic root of 668954274 is about 874.5785285549.

The spelling of 668954274 in words is "six hundred sixty-eight million, nine hundred fifty-four thousand, two hundred seventy-four".