13761387 has 8 divisors (see below), whose sum is σ = 20387280. Its totient is φ = 9174240.

The previous prime is 13761367. The next prime is 13761389. The reversal of 13761387 is 78316731.

13761387 is a `hidden beast` number, since 1 + 37 + 613 + 8 + 7 = 666.

It is not a de Polignac number, because 13761387 - 2⁶ = 13761323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13761389) 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, 254814 + ... + 254867.

It is an arithmetic number, because the mean of its divisors is an integer number (2548410).

Almost surely, 2^13761387 is an apocalyptic number.

13761387 is a deficient number, since it is larger than the sum of its proper divisors (6625893).

13761387 is an equidigital number, since it uses as much as digits as its factorization.

13761387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509690 (or 509684 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 13761387 is about 3709.6343485578. The cubic root of 13761387 is about 239.6371078152.

The spelling of 13761387 in words is "thirteen million, seven hundred sixty-one thousand, three hundred eighty-seven".