13770620 has 12 divisors (see below), whose sum is σ = 28918344. Its totient is φ = 5508240.

The previous prime is 13770607. The next prime is 13770637. The reversal of 13770620 is 2607731.

It is a self number, because there is not a number n which added to its sum of digits gives 13770620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344246 + ... + 344285.

It is an arithmetic number, because the mean of its divisors is an integer number (2409862).

Almost surely, 2^13770620 is an apocalyptic number.

13770620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13770620 is an abundant number, since it is smaller than the sum of its proper divisors (15147724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13770620 is a wasteful number, since it uses less digits than its factorization.

13770620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688540 (or 688538 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 13770620 is about 3710.8786021642. The cubic root of 13770620 is about 239.6906894968.

The spelling of 13770620 in words is "thirteen million, seven hundred seventy thousand, six hundred twenty".