13697538 has 8 divisors (see below), whose sum is σ = 27395088. Its totient is φ = 4565844.

The previous prime is 13697531. The next prime is 13697543. The reversal of 13697538 is 83579631.

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

13697538 is an admirable number.

It is a super-2 number, since 2×13697538² = 375245094522888, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13697538.

It is not an unprimeable number, because it can be changed into a prime (13697531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141456 + ... + 1141467.

It is an arithmetic number, because the mean of its divisors is an integer number (3424386).

Almost surely, 2^13697538 is an apocalyptic number.

13697538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13697538 is a wasteful number, since it uses less digits than its factorization.

13697538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282928.

The product of its digits is 136080, while the sum is 42.

The square root of 13697538 is about 3701.0185084649. The cubic root of 13697538 is about 239.2659166852.

The spelling of 13697538 in words is "thirteen million, six hundred ninety-seven thousand, five hundred thirty-eight".