133632657 has 12 divisors (see below), whose sum is σ = 193649664. Its totient is φ = 88800120.

The previous prime is 133632637. The next prime is 133632673. The reversal of 133632657 is 756236331.

133632657 is a `hidden beast` number, since 13 + 3 + 632 + 6 + 5 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-133632657 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (133632607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21073 + ... + 26670.

It is an arithmetic number, because the mean of its divisors is an integer number (16137472).

Almost surely, 2^133632657 is an apocalyptic number.

It is an amenable number.

133632657 is a deficient number, since it is larger than the sum of its proper divisors (60017007).

133632657 is a wasteful number, since it uses less digits than its factorization.

133632657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48060 (or 48057 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 133632657 is about 11559.9592127308. The cubic root of 133632657 is about 511.2549601287.

Adding to 133632657 its reverse (756236331), we get a palindrome (889868988).

The spelling of 133632657 in words is "one hundred thirty-three million, six hundred thirty-two thousand, six hundred fifty-seven".