13708857 has 4 divisors (see below), whose sum is σ = 18278480. Its totient is φ = 9139236.

The previous prime is 13708853. The next prime is 13708859. The reversal of 13708857 is 75880731.

13708857 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 13708857 - 2² = 13708853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13708853) 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, 2284807 + ... + 2284812.

It is an arithmetic number, because the mean of its divisors is an integer number (4569620).

Almost surely, 2^13708857 is an apocalyptic number.

It is an amenable number.

13708857 is a deficient number, since it is larger than the sum of its proper divisors (4569623).

13708857 is an equidigital number, since it uses as much as digits as its factorization.

13708857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569622.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 13708857 is about 3702.5473663412. The cubic root of 13708857 is about 239.3318045662.

The spelling of 13708857 in words is "thirteen million, seven hundred eight thousand, eight hundred fifty-seven".