668702874 has 32 divisors (see below), whose sum is σ = 1594920960. Its totient is φ = 182750832.

The previous prime is 668702861. The next prime is 668702927. The reversal of 668702874 is 478207866.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345154 + ... + 347085.

It is an arithmetic number, because the mean of its divisors is an integer number (49841280).

Almost surely, 2^668702874 is an apocalyptic number.

668702874 is an abundant number, since it is smaller than the sum of its proper divisors (926218086).

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

668702874 is a wasteful number, since it uses less digits than its factorization.

668702874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692274.

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 668702874 is about 25859.2898974430. The cubic root of 668702874 is about 874.4689562471.

The spelling of 668702874 in words is "six hundred sixty-eight million, seven hundred two thousand, eight hundred seventy-four".