668250774 has 48 divisors (see below), whose sum is σ = 1462918704. Its totient is φ = 220449600.

The previous prime is 668250743. The next prime is 668250797. The reversal of 668250774 is 477052866.

668250774 is a `hidden beast` number, since 66 + 82 + 507 + 7 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1234944 + ... + 1235484.

It is an arithmetic number, because the mean of its divisors is an integer number (30477473).

Almost surely, 2^668250774 is an apocalyptic number.

668250774 is an abundant number, since it is smaller than the sum of its proper divisors (794667930).

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

668250774 is a wasteful number, since it uses less digits than its factorization.

668250774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 668250774 is about 25850.5468800952. The cubic root of 668250774 is about 874.2718400290.

The spelling of 668250774 in words is "six hundred sixty-eight million, two hundred fifty thousand, seven hundred seventy-four".