136704657 has 8 divisors (see below), whose sum is σ = 183664800. Its totient is φ = 90440480.

The previous prime is 136704653. The next prime is 136704661. The reversal of 136704657 is 756407631.

It is an interprime number because it is at equal distance from previous prime (136704653) and next prime (136704661).

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

It is a cyclic number.

It is not a de Polignac number, because 136704657 - 2² = 136704653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136704653) 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, 173532 + ... + 174317.

It is an arithmetic number, because the mean of its divisors is an integer number (22958100).

Almost surely, 2^136704657 is an apocalyptic number.

It is an amenable number.

136704657 is a deficient number, since it is larger than the sum of its proper divisors (46960143).

136704657 is a wasteful number, since it uses less digits than its factorization.

136704657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347983.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 136704657 is about 11692.0766761085. The cubic root of 136704657 is about 515.1429609082.

The spelling of 136704657 in words is "one hundred thirty-six million, seven hundred four thousand, six hundred fifty-seven".