15980717 has 4 divisors (see below), whose sum is σ = 16496256. Its totient is φ = 15465180.

The previous prime is 15980677. The next prime is 15980743. The reversal of 15980717 is 71708951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15980717 - 2¹⁶ = 15915181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15980747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257723 + ... + 257784.

It is an arithmetic number, because the mean of its divisors is an integer number (4124064).

Almost surely, 2^15980717 is an apocalyptic number.

It is an amenable number.

15980717 is a deficient number, since it is larger than the sum of its proper divisors (515539).

15980717 is an equidigital number, since it uses as much as digits as its factorization.

15980717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515538.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 15980717 is about 3997.5888983236. The cubic root of 15980717 is about 251.8829398782.

The spelling of 15980717 in words is "fifteen million, nine hundred eighty thousand, seven hundred seventeen".