13424657 has 4 divisors (see below), whose sum is σ = 13710336. Its totient is φ = 13138980.

The previous prime is 13424647. The next prime is 13424681. The reversal of 13424657 is 75642431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13424657 - 2⁴ = 13424641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13424647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142769 + ... + 142862.

It is an arithmetic number, because the mean of its divisors is an integer number (3427584).

Almost surely, 2^13424657 is an apocalyptic number.

It is an amenable number.

13424657 is a deficient number, since it is larger than the sum of its proper divisors (285679).

13424657 is an equidigital number, since it uses as much as digits as its factorization.

13424657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285678.

The product of its digits is 20160, while the sum is 32.

The square root of 13424657 is about 3663.9673852260. The cubic root of 13424657 is about 237.6663698565. Note that the first 3 decimals are identical.

The spelling of 13424657 in words is "thirteen million, four hundred twenty-four thousand, six hundred fifty-seven".