13697679 has 8 divisors (see below), whose sum is σ = 18314032. Its totient is φ = 9106560.

The previous prime is 13697653. The next prime is 13697687. The reversal of 13697679 is 97679631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13697679 - 2¹¹ = 13695631 is a prime.

It is a super-3 number, since 3×13697679³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13697639) 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, 5002 + ... + 7239.

It is an arithmetic number, because the mean of its divisors is an integer number (2289254).

Almost surely, 2^13697679 is an apocalyptic number.

13697679 is a deficient number, since it is larger than the sum of its proper divisors (4616353).

13697679 is a wasteful number, since it uses less digits than its factorization.

13697679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12617.

The product of its digits is 428652, while the sum is 48.

The square root of 13697679 is about 3701.0375572264. The cubic root of 13697679 is about 239.2667376692.

The spelling of 13697679 in words is "thirteen million, six hundred ninety-seven thousand, six hundred seventy-nine".