13620845 has 8 divisors (see below), whose sum is σ = 18680064. Its totient is φ = 9339984.

The previous prime is 13620839. The next prime is 13620857. The reversal of 13620845 is 54802631.

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

It is a cyclic number.

It is not a de Polignac number, because 13620845 - 2⁴ = 13620829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194549 + ... + 194618.

It is an arithmetic number, because the mean of its divisors is an integer number (2335008).

Almost surely, 2^13620845 is an apocalyptic number.

It is an amenable number.

13620845 is a deficient number, since it is larger than the sum of its proper divisors (5059219).

13620845 is an equidigital number, since it uses as much as digits as its factorization.

13620845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389179.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 13620845 is about 3690.6428979244. The cubic root of 13620845 is about 238.8185278831.

The spelling of 13620845 in words is "thirteen million, six hundred twenty thousand, eight hundred forty-five".