13631845 has 8 divisors (see below), whose sum is σ = 16565760. Its totient is φ = 10767120.

The previous prime is 13631831. The next prime is 13631857. The reversal of 13631845 is 54813631.

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

It is not a de Polignac number, because 13631845 - 2¹³ = 13623653 is a prime.

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, 16861 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (2070720).

Almost surely, 2^13631845 is an apocalyptic number.

It is an amenable number.

13631845 is a deficient number, since it is larger than the sum of its proper divisors (2933915).

13631845 is an equidigital number, since it uses as much as digits as its factorization.

13631845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34595.

The product of its digits is 8640, while the sum is 31.

The square root of 13631845 is about 3692.1328524310. The cubic root of 13631845 is about 238.8827993961.

The spelling of 13631845 in words is "thirteen million, six hundred thirty-one thousand, eight hundred forty-five".