13040687 has 12 divisors (see below), whose sum is σ = 14692776. Its totient is φ = 11470320.

The previous prime is 13040659. The next prime is 13040689. The reversal of 13040687 is 78604031.

It is not a de Polignac number, because 13040687 - 2⁶ = 13040623 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72764 + ... + 72942.

It is an arithmetic number, because the mean of its divisors is an integer number (1224398).

Almost surely, 2^13040687 is an apocalyptic number.

13040687 is a deficient number, since it is larger than the sum of its proper divisors (1652089).

13040687 is an equidigital number, since it uses as much as digits as its factorization.

13040687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 13040687 is about 3611.1891393279. The cubic root of 13040687 is about 235.3785177992.

The spelling of 13040687 in words is "thirteen million, forty thousand, six hundred eighty-seven".