85840880 has 40 divisors (see below), whose sum is σ = 204455664. Its totient is φ = 33497600.

The previous prime is 85840861. The next prime is 85840883. The reversal of 85840880 is 8804858.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85840883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9806 + ... + 16365.

Almost surely, 2^85840880 is an apocalyptic number.

85840880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85840880 is an abundant number, since it is smaller than the sum of its proper divisors (118614784).

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

85840880 is a wasteful number, since it uses less digits than its factorization.

85840880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26225 (or 26219 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 41.

The square root of 85840880 is about 9265.0353480168. The cubic root of 85840880 is about 441.1280969846.

The spelling of 85840880 in words is "eighty-five million, eight hundred forty thousand, eight hundred eighty".