85015680 has 64 divisors (see below), whose sum is σ = 270993600. Its totient is φ = 22670336.

The previous prime is 85015669. The next prime is 85015717. The reversal of 85015680 is 8651058.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20220 + ... + 24059.

It is an arithmetic number, because the mean of its divisors is an integer number (4234275).

Almost surely, 2^85015680 is an apocalyptic number.

85015680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85015680 is an abundant number, since it is smaller than the sum of its proper divisors (185977920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85015680 is a wasteful number, since it uses less digits than its factorization.

85015680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44301 (or 44289 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 85015680 is about 9220.3947854742. The cubic root of 85015680 is about 439.7100017454.

The spelling of 85015680 in words is "eighty-five million, fifteen thousand, six hundred eighty".