13628957 has 2 divisors, whose sum is σ = 13628958. Its totient is φ = 13628956.

The previous prime is 13628929. The next prime is 13628963. The reversal of 13628957 is 75982631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13623481 + 5476 = 3691^2 + 74^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13628957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13628257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6814478 + 6814479.

It is an arithmetic number, because the mean of its divisors is an integer number (6814479).

Almost surely, 2^13628957 is an apocalyptic number.

It is an amenable number.

13628957 is a deficient number, since it is larger than the sum of its proper divisors (1).

13628957 is an equidigital number, since it uses as much as digits as its factorization.

13628957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 13628957 is about 3691.7417298614. The cubic root of 13628957 is about 238.8659285506.

The spelling of 13628957 in words is "thirteen million, six hundred twenty-eight thousand, nine hundred fifty-seven".