13622947 has 16 divisors (see below), whose sum is σ = 15311520. Its totient is φ = 12038400.

The previous prime is 13622897. The next prime is 13622977. The reversal of 13622947 is 74922631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13622947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13622977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32304 + ... + 32722.

It is an arithmetic number, because the mean of its divisors is an integer number (956970).

Almost surely, 2^13622947 is an apocalyptic number.

13622947 is a deficient number, since it is larger than the sum of its proper divisors (1688573).

13622947 is a wasteful number, since it uses less digits than its factorization.

13622947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its digits is 18144, while the sum is 34.

The square root of 13622947 is about 3690.9276611714. The cubic root of 13622947 is about 238.8308122587.

The spelling of 13622947 in words is "thirteen million, six hundred twenty-two thousand, nine hundred forty-seven".