13663694 has 16 divisors (see below), whose sum is σ = 22415616. Its totient is φ = 6195000.

The previous prime is 13663691. The next prime is 13663697. The reversal of 13663694 is 49636631.

It is an interprime number because it is at equal distance from previous prime (13663691) and next prime (13663697).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13663691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16109 + ... + 16935.

It is an arithmetic number, because the mean of its divisors is an integer number (1400976).

Almost surely, 2^13663694 is an apocalyptic number.

13663694 is a deficient number, since it is larger than the sum of its proper divisors (8751922).

13663694 is a wasteful number, since it uses less digits than its factorization.

13663694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its digits is 69984, while the sum is 38.

The square root of 13663694 is about 3696.4434257811. The cubic root of 13663694 is about 239.0686940369.

The spelling of 13663694 in words is "thirteen million, six hundred sixty-three thousand, six hundred ninety-four".