13620646 has 16 divisors (see below), whose sum is σ = 22960224. Its totient is φ = 6012864.

The previous prime is 13620641. The next prime is 13620667. The reversal of 13620646 is 64602631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620641) 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, 10791 + ... + 11986.

It is an arithmetic number, because the mean of its divisors is an integer number (1435014).

Almost surely, 2^13620646 is an apocalyptic number.

13620646 is a deficient number, since it is larger than the sum of its proper divisors (9339578).

13620646 is a wasteful number, since it uses less digits than its factorization.

13620646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22815.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 13620646 is about 3690.6159377535. The cubic root of 13620646 is about 238.8173648344.

The spelling of 13620646 in words is "thirteen million, six hundred twenty thousand, six hundred forty-six".