667923068 has 12 divisors (see below), whose sum is σ = 1169072520. Its totient is φ = 333902352.

The previous prime is 667923049. The next prime is 667923097. The reversal of 667923068 is 860329766.

It is a super-2 number, since 2×667923068² = 892242449533065248, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 19355 + ... + 41357.

It is an arithmetic number, because the mean of its divisors is an integer number (97422710).

Almost surely, 2^667923068 is an apocalyptic number.

It is an amenable number.

667923068 is a deficient number, since it is larger than the sum of its proper divisors (501149452).

667923068 is a wasteful number, since it uses less digits than its factorization.

667923068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29596 (or 29594 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 667923068 is about 25844.2076295637. The cubic root of 667923068 is about 874.1289041808.

The spelling of 667923068 in words is "six hundred sixty-seven million, nine hundred twenty-three thousand, sixty-eight".