668914229574 has 12 divisors (see below), whose sum is σ = 1449314164116. Its totient is φ = 222971409852.

The previous prime is 668914229549. The next prime is 668914229629. The reversal of 668914229574 is 475922419866.

668914229574 is a `hidden beast` number, since 66 + 89 + 1 + 422 + 9 + 5 + 74 = 666.

668914229574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18580950804 + ... + 18580950839.

It is an arithmetic number, because the mean of its divisors is an integer number (120776180343).

Almost surely, 2^668914229574 is an apocalyptic number.

668914229574 is an abundant number, since it is smaller than the sum of its proper divisors (780399934542).

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

668914229574 is a wasteful number, since it uses less digits than its factorization.

668914229574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37161901651 (or 37161901648 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 668914229574 in words is "six hundred sixty-eight billion, nine hundred fourteen million, two hundred twenty-nine thousand, five hundred seventy-four".