13636997 has 4 divisors (see below), whose sum is σ = 14876736. Its totient is φ = 12397260.

The previous prime is 13636981. The next prime is 13637011. The reversal of 13636997 is 79963631.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 13636997 - 2⁴ = 13636981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13636967) 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, 619853 + ... + 619874.

It is an arithmetic number, because the mean of its divisors is an integer number (3719184).

Almost surely, 2^13636997 is an apocalyptic number.

It is an amenable number.

13636997 is a deficient number, since it is larger than the sum of its proper divisors (1239739).

13636997 is a wasteful number, since it uses less digits than its factorization.

13636997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239738.

The product of its digits is 183708, while the sum is 44.

The square root of 13636997 is about 3692.8304862260. The cubic root of 13636997 is about 238.9128899468.

The spelling of 13636997 in words is "thirteen million, six hundred thirty-six thousand, nine hundred ninety-seven".