136657671 has 8 divisors (see below), whose sum is σ = 191800320. Its totient is φ = 86310072.

The previous prime is 136657639. The next prime is 136657699. The reversal of 136657671 is 176756631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136657671 - 2⁵ = 136657639 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136657621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198695 + ... + 1198808.

It is an arithmetic number, because the mean of its divisors is an integer number (23975040).

Almost surely, 2^136657671 is an apocalyptic number.

136657671 is a deficient number, since it is larger than the sum of its proper divisors (55142649).

136657671 is a wasteful number, since it uses less digits than its factorization.

136657671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397525.

The product of its digits is 158760, while the sum is 42.

The square root of 136657671 is about 11690.0671939899. The cubic root of 136657671 is about 515.0839351679.

The spelling of 136657671 in words is "one hundred thirty-six million, six hundred fifty-seven thousand, six hundred seventy-one".