13623957 has 10 divisors (see below), whose sum is σ = 20351958. Its totient is φ = 9082584.

The previous prime is 13623949. The next prime is 13623959. The reversal of 13623957 is 75932631.

13623957 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 599076 = 3609^2 + 774^2 .

It is not a de Polignac number, because 13623957 - 2³ = 13623949 is a prime.

It is a super-2 number, since 2×13623957² = 371224408675698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13623959) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84018 + ... + 84179.

Almost surely, 2^13623957 is an apocalyptic number.

It is an amenable number.

13623957 is a deficient number, since it is larger than the sum of its proper divisors (6728001).

13623957 is an equidigital number, since it uses as much as digits as its factorization.

13623957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168209 (or 168200 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 13623957 is about 3691.0644806072. The cubic root of 13623957 is about 238.8367143874.

The spelling of 13623957 in words is "thirteen million, six hundred twenty-three thousand, nine hundred fifty-seven".