667897714 has 16 divisors (see below), whose sum is σ = 1095690816. Its totient is φ = 302821200.

The previous prime is 667897669. The next prime is 667897721. The reversal of 667897714 is 417798766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29502 + ... + 46969.

It is an arithmetic number, because the mean of its divisors is an integer number (68480676).

Almost surely, 2^667897714 is an apocalyptic number.

667897714 is a deficient number, since it is larger than the sum of its proper divisors (427793102).

667897714 is a wasteful number, since it uses less digits than its factorization.

667897714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76881.

The product of its digits is 3556224, while the sum is 55.

The square root of 667897714 is about 25843.7171088062. The cubic root of 667897714 is about 874.1178435533.

The spelling of 667897714 in words is "six hundred sixty-seven million, eight hundred ninety-seven thousand, seven hundred fourteen".