85810660 has 24 divisors (see below), whose sum is σ = 194064696. Its totient is φ = 31683840.

The previous prime is 85810643. The next prime is 85810687. The reversal of 85810660 is 6601858.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9388096 + 76422564 = 3064^2 + 8742^2 .

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, 164761 + ... + 165280.

It is an arithmetic number, because the mean of its divisors is an integer number (8086029).

Almost surely, 2^85810660 is an apocalyptic number.

It is an amenable number.

85810660 is an abundant number, since it is smaller than the sum of its proper divisors (108254036).

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

85810660 is a wasteful number, since it uses less digits than its factorization.

85810660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330063 (or 330061 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 85810660 is about 9263.4043418173. The cubic root of 85810660 is about 441.0763250093.

The spelling of 85810660 in words is "eighty-five million, eight hundred ten thousand, six hundred sixty".