133917657 has 16 divisors (see below), whose sum is σ = 181739520. Its totient is φ = 87694992.

The previous prime is 133917629. The next prime is 133917671. The reversal of 133917657 is 756719331.

It is not a de Polignac number, because 133917657 - 2⁸ = 133917401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133917607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92344 + ... + 93782.

It is an arithmetic number, because the mean of its divisors is an integer number (11358720).

Almost surely, 2^133917657 is an apocalyptic number.

It is an amenable number.

133917657 is a deficient number, since it is larger than the sum of its proper divisors (47821863).

133917657 is a wasteful number, since it uses less digits than its factorization.

133917657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972.

The product of its digits is 119070, while the sum is 42.

The square root of 133917657 is about 11572.2796803396. The cubic root of 133917657 is about 511.6181552869.

The spelling of 133917657 in words is "one hundred thirty-three million, nine hundred seventeen thousand, six hundred fifty-seven".