667920124 has 24 divisors (see below), whose sum is σ = 1178166528. Its totient is φ = 331311360.

The previous prime is 667920109. The next prime is 667920133. The reversal of 667920124 is 421029766.

It is a super-2 number, since 2×667920124² = 892234584088350752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348192 + ... + 350104.

It is an arithmetic number, because the mean of its divisors is an integer number (49090272).

Almost surely, 2^667920124 is an apocalyptic number.

It is an amenable number.

667920124 is a deficient number, since it is larger than the sum of its proper divisors (510246404).

667920124 is a wasteful number, since it uses less digits than its factorization.

667920124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 667920124 is about 25844.1506728312. The cubic root of 667920124 is about 874.1276198815.

The spelling of 667920124 in words is "six hundred sixty-seven million, nine hundred twenty thousand, one hundred twenty-four".