85761880 has 16 divisors (see below), whose sum is σ = 192964320. Its totient is φ = 34304736.

The previous prime is 85761857. The next prime is 85761881. The reversal of 85761880 is 8816758.

It is a super-2 number, since 2×85761880² = 14710200122268800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85761881) 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, 1071984 + ... + 1072063.

It is an arithmetic number, because the mean of its divisors is an integer number (12060270).

Almost surely, 2^85761880 is an apocalyptic number.

It is an amenable number.

85761880 is an abundant number, since it is smaller than the sum of its proper divisors (107202440).

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

85761880 is a wasteful number, since it uses less digits than its factorization.

85761880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144058 (or 2144054 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 85761880 is about 9260.7710262159. The cubic root of 85761880 is about 440.9927309610.

The spelling of 85761880 in words is "eighty-five million, seven hundred sixty-one thousand, eight hundred eighty".