85139060 has 24 divisors (see below), whose sum is σ = 189309960. Its totient is φ = 32052224.

The previous prime is 85139053. The next prime is 85139063. The reversal of 85139060 is 6093158.

It can be written as a sum of positive squares in 4 ways, for example, as 16613776 + 68525284 = 4076^2 + 8278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85139063) 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 7 ways as a sum of consecutive naturals, for example, 124865 + ... + 125544.

It is an arithmetic number, because the mean of its divisors is an integer number (7887915).

Almost surely, 2^85139060 is an apocalyptic number.

It is an amenable number.

85139060 is an abundant number, since it is smaller than the sum of its proper divisors (104170900).

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

85139060 is a wasteful number, since it uses less digits than its factorization.

85139060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250435 (or 250433 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 85139060 is about 9227.0829626703. The cubic root of 85139060 is about 439.9226103560.

The spelling of 85139060 in words is "eighty-five million, one hundred thirty-nine thousand, sixty".