667136 has 20 divisors (see below), whose sum is σ = 1333992. Its totient is φ = 333312.

The previous prime is 667129. The next prime is 667141. The reversal of 667136 is 631766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667099 and 667108.

It is a congruent number.

It is an unprimeable number.

667136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140 + ... + 1163.

2⁶⁶⁷¹³⁶ is an apocalyptic number.

It is an amenable number.

667136 is a deficient number, since it is larger than the sum of its proper divisors (666856).

667136 is an equidigital number, since it uses as much as digits as its factorization.

667136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1305 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 667136 is about 816.7839371584. The cubic root of 667136 is about 87.3785416864.

The spelling of 667136 in words is "six hundred sixty-seven thousand, one hundred thirty-six".