668715034 has 8 divisors (see below), whose sum is σ = 1080232020. Its totient is φ = 308637696.

The previous prime is 668715029. The next prime is 668715049. The reversal of 668715034 is 430517866.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 637411009 + 31304025 = 25247^2 + 5595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12859879 + ... + 12859930.

Almost surely, 2^668715034 is an apocalyptic number.

668715034 is a deficient number, since it is larger than the sum of its proper divisors (411516986).

668715034 is a wasteful number, since it uses less digits than its factorization.

668715034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25719824.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 668715034 is about 25859.5250149727. The cubic root of 668715034 is about 874.4742567966.

The spelling of 668715034 in words is "six hundred sixty-eight million, seven hundred fifteen thousand, thirty-four".