667356 has 24 divisors (see below), whose sum is σ = 1639680. Its totient is φ = 210672.

The previous prime is 667351. The next prime is 667361. The reversal of 667356 is 653766.

It is an interprime number because it is at equal distance from previous prime (667351) and next prime (667361).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (68320).

2⁶⁶⁷³⁵⁶ is an apocalyptic number.

It is an amenable number.

667356 is an abundant number, since it is smaller than the sum of its proper divisors (972324).

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

667356 is a wasteful number, since it uses less digits than its factorization.

667356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2951 counting only the distinct ones).

The product of its digits is 22680, while the sum is 33.

The square root of 667356 is about 816.9186005962. The cubic root of 667356 is about 87.3881455086.

The spelling of 667356 in words is "six hundred sixty-seven thousand, three hundred fifty-six".