13713457 has 4 divisors (see below), whose sum is σ = 13723236. Its totient is φ = 13703680.

The previous prime is 13713449. The next prime is 13713461. The reversal of 13713457 is 75431731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9709456 + 4004001 = 3116^2 + 2001^2 .

It is a cyclic number.

It is not a de Polignac number, because 13713457 - 2³ = 13713449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13713467) 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, 2344 + ... + 5737.

It is an arithmetic number, because the mean of its divisors is an integer number (3430809).

Almost surely, 2^13713457 is an apocalyptic number.

It is an amenable number.

13713457 is a deficient number, since it is larger than the sum of its proper divisors (9779).

13713457 is an equidigital number, since it uses as much as digits as its factorization.

13713457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9778.

The product of its digits is 8820, while the sum is 31.

The square root of 13713457 is about 3703.1685081832. The cubic root of 13713457 is about 239.3585707944.

The spelling of 13713457 in words is "thirteen million, seven hundred thirteen thousand, four hundred fifty-seven".