13699057 has 4 divisors (see below), whose sum is σ = 14420080. Its totient is φ = 12978036.

The previous prime is 13699051. The next prime is 13699061. The reversal of 13699057 is 75099631.

13699057 is digitally balanced in base 2, because in such base 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, and also an emirpimes, since its reverse is a distinct semiprime: 75099631 = 97 ⋅774223.

It is a cyclic number.

It is not a de Polignac number, because 13699057 - 2⁷ = 13698929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13699051) 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, 360483 + ... + 360520.

It is an arithmetic number, because the mean of its divisors is an integer number (3605020).

Almost surely, 2^13699057 is an apocalyptic number.

It is an amenable number.

13699057 is a deficient number, since it is larger than the sum of its proper divisors (721023).

13699057 is an equidigital number, since it uses as much as digits as its factorization.

13699057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721022.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 13699057 is about 3701.2237165565. The cubic root of 13699057 is about 239.2747608899.

The spelling of 13699057 in words is "thirteen million, six hundred ninety-nine thousand, fifty-seven".