13770845 has 32 divisors (see below), whose sum is σ = 18976896. Its totient is φ = 9504000.

The previous prime is 13770821. The next prime is 13770863. The reversal of 13770845 is 54807731.

It is not a de Polignac number, because 13770845 - 2¹² = 13766749 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 31 ways as a sum of consecutive naturals, for example, 136295 + ... + 136395.

It is an arithmetic number, because the mean of its divisors is an integer number (593028).

Almost surely, 2^13770845 is an apocalyptic number.

It is an amenable number.

13770845 is a deficient number, since it is larger than the sum of its proper divisors (5206051).

13770845 is a wasteful number, since it uses less digits than its factorization.

13770845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 13770845 is about 3710.9089183110. The cubic root of 13770845 is about 239.6919949357.

The spelling of 13770845 in words is "thirteen million, seven hundred seventy thousand, eight hundred forty-five".