13697636 has 6 divisors (see below), whose sum is σ = 23970870. Its totient is φ = 6848816.

The previous prime is 13697623. The next prime is 13697639. The reversal of 13697636 is 63679631.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 155236 = 3680^2 + 394^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13697593 and 13697602.

It is not an unprimeable number, because it can be changed into a prime (13697639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712201 + ... + 1712208.

It is an arithmetic number, because the mean of its divisors is an integer number (3995145).

Almost surely, 2^13697636 is an apocalyptic number.

It is an amenable number.

13697636 is a deficient number, since it is larger than the sum of its proper divisors (10273234).

13697636 is a wasteful number, since it uses less digits than its factorization.

13697636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424413 (or 3424411 counting only the distinct ones).

The product of its digits is 122472, while the sum is 41.

The square root of 13697636 is about 3701.0317480400. The cubic root of 13697636 is about 239.2664872988.

The spelling of 13697636 in words is "thirteen million, six hundred ninety-seven thousand, six hundred thirty-six".