13861715 has 16 divisors (see below), whose sum is σ = 20129472. Its totient is φ = 8945664.

The previous prime is 13861711. The next prime is 13861733. The reversal of 13861715 is 51716831.

13861715 is digitally balanced in base 2 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 13861715 - 2² = 13861711 is a prime.

It is a Duffinian number.

13861715 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13861711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11054 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (1258092).

Almost surely, 2^13861715 is an apocalyptic number.

13861715 is a deficient number, since it is larger than the sum of its proper divisors (6267757).

13861715 is a wasteful number, since it uses less digits than its factorization.

13861715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23326.

The product of its digits is 5040, while the sum is 32.

The square root of 13861715 is about 3723.1324177364. The cubic root of 13861715 is about 240.2180599163.

The spelling of 13861715 in words is "thirteen million, eight hundred sixty-one thousand, seven hundred fifteen".