13691056 has 20 divisors (see below), whose sum is σ = 26590312. Its totient is φ = 6829056.

The previous prime is 13691033. The next prime is 13691107. The reversal of 13691056 is 65019631.

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, 8491 + ... + 9973.

Almost surely, 2^13691056 is an apocalyptic number.

13691056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13691056 is a deficient number, since it is larger than the sum of its proper divisors (12899256).

13691056 is a wasteful number, since it uses less digits than its factorization.

13691056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 13691056 is about 3700.1426999509. The cubic root of 13691056 is about 239.2281686271.

The spelling of 13691056 in words is "thirteen million, six hundred ninety-one thousand, fifty-six".