13970986 has 8 divisors (see below), whose sum is σ = 21109860. Its totient is φ = 6934368.

The previous prime is 13970977. The next prime is 13970989. The reversal of 13970986 is 68907931.

13970986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13920361 + 50625 = 3731^2 + 225^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13970989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25221 + ... + 25768.

Almost surely, 2^13970986 is an apocalyptic number.

13970986 is a deficient number, since it is larger than the sum of its proper divisors (7138874).

13970986 is a wasteful number, since it uses less digits than its factorization.

13970986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51128.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 13970986 is about 3737.7782170696. The cubic root of 13970986 is about 240.8476163457.

The spelling of 13970986 in words is "thirteen million, nine hundred seventy thousand, nine hundred eighty-six".