13115966 has 16 divisors (see below), whose sum is σ = 20780160. Its totient is φ = 6191640.

The previous prime is 13115951. The next prime is 13115981. The reversal of 13115966 is 66951131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13115951) and next prime (13115981).

It is a super-2 number, since 2×13115966² = 344057128226312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20471 + ... + 21101.

It is an arithmetic number, because the mean of its divisors is an integer number (1298760).

Almost surely, 2^13115966 is an apocalyptic number.

13115966 is a deficient number, since it is larger than the sum of its proper divisors (7664194).

13115966 is a wasteful number, since it uses less digits than its factorization.

13115966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199.

The product of its digits is 4860, while the sum is 32.

The square root of 13115966 is about 3621.5971614745. The cubic root of 13115966 is about 235.8305664068.

The spelling of 13115966 in words is "thirteen million, one hundred fifteen thousand, nine hundred sixty-six".