15713985 has 32 divisors (see below), whose sum is σ = 29018880. Its totient is φ = 7112448.

The previous prime is 15713983. The next prime is 15714019. The reversal of 15713985 is 58931751.

It is not a de Polignac number, because 15713985 - 2¹ = 15713983 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (15713983) 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, 10759 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (906840).

Almost surely, 2^15713985 is an apocalyptic number.

15713985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15713985 is the 2289-th octagonal number.

It is an amenable number.

15713985 is a deficient number, since it is larger than the sum of its proper divisors (13304895).

15713985 is a wasteful number, since it uses less digits than its factorization.

15713985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497.

The product of its digits is 37800, while the sum is 39.

The square root of 15713985 is about 3964.0869062118. The cubic root of 15713985 is about 250.4736885763.

The spelling of 15713985 in words is "fifteen million, seven hundred thirteen thousand, nine hundred eighty-five".