13691456 has 14 divisors (see below), whose sum is σ = 27169110. Its totient is φ = 6845696.

The previous prime is 13691449. The next prime is 13691467. The reversal of 13691456 is 65419631.

It can be written as a sum of positive squares in only one way, i.e., 12845056 + 846400 = 3584^2 + 920^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106901 + ... + 107028.

Almost surely, 2^13691456 is an apocalyptic number.

13691456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13691456 is a deficient number, since it is larger than the sum of its proper divisors (13477654).

13691456 is an equidigital number, since it uses as much as digits as its factorization.

13691456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213941 (or 213931 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 13691456 is about 3700.1967515255. The cubic root of 13691456 is about 239.2304983800.

The spelling of 13691456 in words is "thirteen million, six hundred ninety-one thousand, four hundred fifty-six".