13995866 has 8 divisors (see below), whose sum is σ = 21009780. Its totient is φ = 6992608.

The previous prime is 13995853. The next prime is 13995871. The reversal of 13995866 is 66859931.

It can be written as a sum of positive squares in 2 ways, for example, as 10465225 + 3530641 = 3235^2 + 1879^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13995866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3230 + ... + 6198.

Almost surely, 2^13995866 is an apocalyptic number.

13995866 is a deficient number, since it is larger than the sum of its proper divisors (7013914).

13995866 is a wasteful number, since it uses less digits than its factorization.

13995866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328.

The product of its digits is 349920, while the sum is 47.

The square root of 13995866 is about 3741.1049169998. The cubic root of 13995866 is about 240.9905013961.

The spelling of 13995866 in words is "thirteen million, nine hundred ninety-five thousand, eight hundred sixty-six".