13161687 has 32 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 6780000.

The previous prime is 13161601. The next prime is 13161703. The reversal of 13161687 is 78616131.

It is not a de Polignac number, because 13161687 - 2⁸ = 13161431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52312 + ... + 52562.

It is an arithmetic number, because the mean of its divisors is an integer number (689472).

Almost surely, 2^13161687 is an apocalyptic number.

13161687 is a deficient number, since it is larger than the sum of its proper divisors (8901417).

13161687 is a wasteful number, since it uses less digits than its factorization.

13161687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499.

The product of its digits is 6048, while the sum is 33.

The square root of 13161687 is about 3627.9039402939. The cubic root of 13161687 is about 236.1042761923.

It can be divided in two parts, 1316 and 1687, that added together give a palindrome (3003).

The spelling of 13161687 in words is "thirteen million, one hundred sixty-one thousand, six hundred eighty-seven".