13870605 has 32 divisors (see below), whose sum is σ = 25804800. Its totient is φ = 6230592.

The previous prime is 13870603. The next prime is 13870643. The reversal of 13870605 is 50607831.

13870605 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13870605 - 2¹ = 13870603 is a prime.

13870605 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13870601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5076 + ... + 7314.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^13870605 is an apocalyptic number.

13870605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13870605 is a deficient number, since it is larger than the sum of its proper divisors (11934195).

13870605 is a wasteful number, since it uses less digits than its factorization.

13870605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 13870605 is about 3724.3261135405. The cubic root of 13870605 is about 240.2694023412.

The spelling of 13870605 in words is "thirteen million, eight hundred seventy thousand, six hundred five".