85560780 has 48 divisors (see below), whose sum is σ = 241032960. Its totient is φ = 22676928.

The previous prime is 85560757. The next prime is 85560791. The reversal of 85560780 is 8706558.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5751 + ... + 14289.

It is an arithmetic number, because the mean of its divisors is an integer number (5021520).

Almost surely, 2^85560780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85560780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120516480).

85560780 is an abundant number, since it is smaller than the sum of its proper divisors (155472180).

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

85560780 is a wasteful number, since it uses less digits than its factorization.

85560780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718 (or 8716 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 85560780 is about 9249.9070265598. The cubic root of 85560780 is about 440.6477717722.

The spelling of 85560780 in words is "eighty-five million, five hundred sixty thousand, seven hundred eighty".