13432657 has 16 divisors (see below), whose sum is σ = 15780352. Its totient is φ = 11197440.

The previous prime is 13432633. The next prime is 13432687. The reversal of 13432657 is 75623431.

It is a cyclic number.

It is not a de Polignac number, because 13432657 - 2¹⁵ = 13399889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13432687) 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, 49432 + ... + 49702.

It is an arithmetic number, because the mean of its divisors is an integer number (986272).

Almost surely, 2^13432657 is an apocalyptic number.

It is an amenable number.

13432657 is a deficient number, since it is larger than the sum of its proper divisors (2347695).

13432657 is an equidigital number, since it uses as much as digits as its factorization.

13432657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448.

The product of its digits is 15120, while the sum is 31.

The square root of 13432657 is about 3665.0589354061. The cubic root of 13432657 is about 237.7135704021.

The spelling of 13432657 in words is "thirteen million, four hundred thirty-two thousand, six hundred fifty-seven".