11986515 has 16 divisors (see below), whose sum is σ = 21309600. Its totient is φ = 6392736.

The previous prime is 11986493. The next prime is 11986529. The reversal of 11986515 is 51568911.

It is not a de Polignac number, because 11986515 - 2⁶ = 11986451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11986515.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44260 + ... + 44529.

It is an arithmetic number, because the mean of its divisors is an integer number (1331850).

Almost surely, 2^11986515 is an apocalyptic number.

11986515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11986515 is a deficient number, since it is larger than the sum of its proper divisors (9323085).

11986515 is an equidigital number, since it uses as much as digits as its factorization.

11986515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88803 (or 88797 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 11986515 is about 3462.1546759208. The cubic root of 11986515 is about 228.8570581917.

The spelling of 11986515 in words is "eleven million, nine hundred eighty-six thousand, five hundred fifteen".