13620786 has 8 divisors (see below), whose sum is σ = 27241584. Its totient is φ = 4540260.

The previous prime is 13620781. The next prime is 13620787. The reversal of 13620786 is 68702631.

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

13620786 is an admirable number.

It is a super-2 number, since 2×13620786² = 371051622515592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13620781) 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, 1135060 + ... + 1135071.

It is an arithmetic number, because the mean of its divisors is an integer number (3405198).

Almost surely, 2^13620786 is an apocalyptic number.

13620786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13620786 is a wasteful number, since it uses less digits than its factorization.

13620786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270136.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 13620786 is about 3690.6349047285. The cubic root of 13620786 is about 238.8181830608.

The spelling of 13620786 in words is "thirteen million, six hundred twenty thousand, seven hundred eighty-six".