668074674 has 16 divisors (see below), whose sum is σ = 1342934208. Its totient is φ = 221560752.

The previous prime is 668074669. The next prime is 668074697. The reversal of 668074674 is 476470866.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281422 + ... + 283785.

It is an arithmetic number, because the mean of its divisors is an integer number (83933388).

Almost surely, 2^668074674 is an apocalyptic number.

668074674 is an abundant number, since it is smaller than the sum of its proper divisors (674859534).

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

668074674 is a wasteful number, since it uses less digits than its factorization.

668074674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565409.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The square root of 668074674 is about 25847.1405381717. The cubic root of 668074674 is about 874.1950361289.

The spelling of 668074674 in words is "six hundred sixty-eight million, seventy-four thousand, six hundred seventy-four".