668766034 has 4 divisors (see below), whose sum is σ = 1003149054. Its totient is φ = 334383016.

The previous prime is 668766023. The next prime is 668766079. The reversal of 668766034 is 430667866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 587820025 + 80946009 = 24245^2 + 8997^2 .

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 as a sum of consecutive naturals, namely, 167191507 + ... + 167191510.

Almost surely, 2^668766034 is an apocalyptic number.

668766034 is a deficient number, since it is larger than the sum of its proper divisors (334383020).

668766034 is a wasteful number, since it uses less digits than its factorization.

668766034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334383019.

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 668766034 is about 25860.5110931706. The cubic root of 668766034 is about 874.4964870198.

The spelling of 668766034 in words is "six hundred sixty-eight million, seven hundred sixty-six thousand, thirty-four".