13697972 has 12 divisors (see below), whose sum is σ = 25013856. Its totient is φ = 6551160.

The previous prime is 13697969. The next prime is 13697987. The reversal of 13697972 is 27979631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74354 + ... + 74537.

It is an arithmetic number, because the mean of its divisors is an integer number (2084488).

Almost surely, 2^13697972 is an apocalyptic number.

It is an amenable number.

13697972 is a deficient number, since it is larger than the sum of its proper divisors (11315884).

13697972 is a wasteful number, since it uses less digits than its factorization.

13697972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148918 (or 148916 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 13697972 is about 3701.0771405092. The cubic root of 13697972 is about 239.2684436675.

The spelling of 13697972 in words is "thirteen million, six hundred ninety-seven thousand, nine hundred seventy-two".