13629997 has 2 divisors, whose sum is σ = 13629998. Its totient is φ = 13629996.

The previous prime is 13629991. The next prime is 13630009. The reversal of 13629997 is 79992631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8404201 + 5225796 = 2899^2 + 2286^2 .

It is a cyclic number.

It is not a de Polignac number, because 13629997 - 2³ = 13629989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13629991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6814998 + 6814999.

It is an arithmetic number, because the mean of its divisors is an integer number (6814999).

Almost surely, 2^13629997 is an apocalyptic number.

It is an amenable number.

13629997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13629997 is an equidigital number, since it uses as much as digits as its factorization.

13629997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 13629997 is about 3691.8825820982. The cubic root of 13629997 is about 238.8720041989.

The spelling of 13629997 in words is "thirteen million, six hundred twenty-nine thousand, nine hundred ninety-seven".