13770345 has 24 divisors (see below), whose sum is σ = 23262336. Its totient is φ = 6954912.

The previous prime is 13770343. The next prime is 13770349. The reversal of 13770345 is 54307731.

13770345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13770345 - 2¹ = 13770343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13770343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4144 + ... + 6686.

It is an arithmetic number, because the mean of its divisors is an integer number (969264).

Almost surely, 2^13770345 is an apocalyptic number.

13770345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13770345 is a deficient number, since it is larger than the sum of its proper divisors (9491991).

13770345 is a wasteful number, since it uses less digits than its factorization.

13770345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589 (or 2570 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 13770345 is about 3710.8415487595. The cubic root of 13770345 is about 239.6890939410.

The spelling of 13770345 in words is "thirteen million, seven hundred seventy thousand, three hundred forty-five".