13810987 has 8 divisors (see below), whose sum is σ = 14688432. Its totient is φ = 12940800.

The previous prime is 13810981. The next prime is 13810999. The reversal of 13810987 is 78901831.

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

It is a cyclic number.

It is not a de Polignac number, because 13810987 - 2²³ = 5422379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13810981) 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, 2412 + ... + 5782.

It is an arithmetic number, because the mean of its divisors is an integer number (1836054).

Almost surely, 2^13810987 is an apocalyptic number.

13810987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13810987 is a deficient number, since it is larger than the sum of its proper divisors (877445).

13810987 is a wasteful number, since it uses less digits than its factorization.

13810987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 13810987 is about 3716.3136304677. The cubic root of 13810987 is about 239.9246696451.

The spelling of 13810987 in words is "thirteen million, eight hundred ten thousand, nine hundred eighty-seven".