13137697 has 4 divisors (see below), whose sum is σ = 13171860. Its totient is φ = 13103536.

The previous prime is 13137689. The next prime is 13137727. The reversal of 13137697 is 79673131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5387041 + 7750656 = 2321^2 + 2784^2 .

It is a cyclic number.

It is not a de Polignac number, because 13137697 - 2³ = 13137689 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13137197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16498 + ... + 17275.

It is an arithmetic number, because the mean of its divisors is an integer number (3292965).

Almost surely, 2^13137697 is an apocalyptic number.

It is an amenable number.

13137697 is a deficient number, since it is larger than the sum of its proper divisors (34163).

13137697 is an equidigital number, since it uses as much as digits as its factorization.

13137697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34162.

The product of its digits is 23814, while the sum is 37.

The square root of 13137697 is about 3624.5961154313. The cubic root of 13137697 is about 235.9607387048.

The spelling of 13137697 in words is "thirteen million, one hundred thirty-seven thousand, six hundred ninety-seven".