85980015 has 32 divisors (see below), whose sum is σ = 166752000. Its totient is φ = 41686560.

The previous prime is 85979981. The next prime is 85980023. The reversal of 85980015 is 51008958.

It is not a de Polignac number, because 85980015 - 2²⁴ = 69202799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27465 + ... + 30434.

It is an arithmetic number, because the mean of its divisors is an integer number (5211000).

Almost surely, 2^85980015 is an apocalyptic number.

85980015 is a deficient number, since it is larger than the sum of its proper divisors (80771985).

85980015 is a wasteful number, since it uses less digits than its factorization.

85980015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57924 (or 57918 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 85980015 is about 9272.5409139027. The cubic root of 85980015 is about 441.3663021654.

It can be divided in two parts, 85 and 980015, that added together give a square (980100 = 990²).

The spelling of 85980015 in words is "eighty-five million, nine hundred eighty thousand, fifteen".