15680089 has 6 divisors (see below), whose sum is σ = 16392026. Its totient is φ = 14997840.

The previous prime is 15680087. The next prime is 15680117. The reversal of 15680089 is 98008651.

It can be written as a sum of positive squares in only one way, i.e., 15468489 + 211600 = 3933^2 + 460^2 .

It is not a de Polignac number, because 15680089 - 2¹ = 15680087 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 (15680087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14292 + ... + 15349.

Almost surely, 2^15680089 is an apocalyptic number.

It is an amenable number.

15680089 is a deficient number, since it is larger than the sum of its proper divisors (711937).

15680089 is an equidigital number, since it uses as much as digits as its factorization.

15680089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29687 (or 29664 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 15680089 is about 3959.8092125758. The cubic root of 15680089 is about 250.2934633822.

The spelling of 15680089 in words is "fifteen million, six hundred eighty thousand, eighty-nine".