13366981 has 8 divisors (see below), whose sum is σ = 14394240. Its totient is φ = 12366528.

The previous prime is 13366967. The next prime is 13367017. The reversal of 13366981 is 18966331.

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 13366981 - 2⁵ = 13366949 is a prime.

It is a super-2 number, since 2×13366981² = 357352362108722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13366981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13366961) 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, 5661 + ... + 7666.

It is an arithmetic number, because the mean of its divisors is an integer number (1799280).

Almost surely, 2^13366981 is an apocalyptic number.

It is an amenable number.

13366981 is a deficient number, since it is larger than the sum of its proper divisors (1027259).

13366981 is a wasteful number, since it uses less digits than its factorization.

13366981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13403.

The product of its digits is 23328, while the sum is 37.

The square root of 13366981 is about 3656.0882100956. The cubic root of 13366981 is about 237.3255213433.

The spelling of 13366981 in words is "thirteen million, three hundred sixty-six thousand, nine hundred eighty-one".