13327657 has 12 divisors (see below), whose sum is σ = 15662916. Its totient is φ = 11306400.

The previous prime is 13327651. The next prime is 13327669. The reversal of 13327657 is 75672331.

It can be written as a sum of positive squares in 2 ways, for example, as 9834496 + 3493161 = 3136^2 + 1869^2 .

It is not a de Polignac number, because 13327657 - 2²³ = 4939049 is a prime.

It is a super-2 number, since 2×13327657² = 355252882219298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13327651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3603 + ... + 6295.

It is an arithmetic number, because the mean of its divisors is an integer number (1305243).

Almost surely, 2^13327657 is an apocalyptic number.

It is an amenable number.

13327657 is a deficient number, since it is larger than the sum of its proper divisors (2335259).

13327657 is a wasteful number, since it uses less digits than its factorization.

13327657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808 (or 2801 counting only the distinct ones).

The product of its digits is 26460, while the sum is 34.

The square root of 13327657 is about 3650.7063700057. The cubic root of 13327657 is about 237.0925653363.

Adding to 13327657 its reverse (75672331), we get a palindrome (88999988).

The spelling of 13327657 in words is "thirteen million, three hundred twenty-seven thousand, six hundred fifty-seven".