13690624 has 18 divisors (see below), whose sum is σ = 27328280. Its totient is φ = 6845184.

The previous prime is 13690619. The next prime is 13690631. The reversal of 13690624 is 42609631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26484 + ... + 26995.

Almost surely, 2^13690624 is an apocalyptic number.

It is an amenable number.

13690624 is a deficient number, since it is larger than the sum of its proper divisors (13637656).

13690624 is an frugal number, since it uses more digits than its factorization.

13690624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53495 (or 53481 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 13690624 is about 3700.0843233635. The cubic root of 13690624 is about 239.2256524429.

The spelling of 13690624 in words is "thirteen million, six hundred ninety thousand, six hundred twenty-four".