667156 has 12 divisors (see below), whose sum is σ = 1334368. Its totient is φ = 285912.

The previous prime is 667141. The next prime is 667171. The reversal of 667156 is 651766.

It is an interprime number because it is at equal distance from previous prime (667141) and next prime (667171).

667156 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 11886 + ... + 11941.

2⁶⁶⁷¹⁵⁶ is an apocalyptic number.

It is an amenable number.

667156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667156 is a wasteful number, since it uses less digits than its factorization.

667156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23838 (or 23836 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 667156 is about 816.7961802065. The cubic root of 667156 is about 87.3794148484.

The spelling of 667156 in words is "six hundred sixty-seven thousand, one hundred fifty-six".