85620080 has 160 divisors (see below), whose sum is σ = 258316800. Its totient is φ = 25629696.

The previous prime is 85620079. The next prime is 85620083. The reversal of 85620080 is 8002658.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85620083) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 138011 + ... + 138629.

It is an arithmetic number, because the mean of its divisors is an integer number (1614480).

Almost surely, 2^85620080 is an apocalyptic number.

85620080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85620080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129158400).

85620080 is an abundant number, since it is smaller than the sum of its proper divisors (172696720).

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

85620080 is a wasteful number, since it uses less digits than its factorization.

85620080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 85620080 is about 9253.1119089742. Note that the first 3 decimals coincide. The cubic root of 85620080 is about 440.7495488497.

The spelling of 85620080 in words is "eighty-five million, six hundred twenty thousand, eighty".