13699072 has 24 divisors (see below), whose sum is σ = 27395550. Its totient is φ = 6848512.

The previous prime is 13699061. The next prime is 13699073. The reversal of 13699072 is 27099631.

It can be written as a sum of positive squares in only one way, i.e., 9634816 + 4064256 = 3104^2 + 2016^2 .

It is a super-2 number, since 2×13699072² = 375329147322368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13699073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1297 + ... + 5392.

Almost surely, 2^13699072 is an apocalyptic number.

It is an amenable number.

13699072 is a deficient number, since it is larger than the sum of its proper divisors (13696478).

13699072 is an frugal number, since it uses more digits than its factorization.

13699072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711 (or 6691 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 13699072 is about 3701.2257429127. The cubic root of 13699072 is about 239.2748482225.

The spelling of 13699072 in words is "thirteen million, six hundred ninety-nine thousand, seventy-two".