85556740 has 12 divisors (see below), whose sum is σ = 179669196. Its totient is φ = 34222688.

The previous prime is 85556729. The next prime is 85556741. The reversal of 85556740 is 4765558.

It can be written as a sum of positive squares in 2 ways, for example, as 8678916 + 76877824 = 2946^2 + 8768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85556693 and 85556702.

It is not an unprimeable number, because it can be changed into a prime (85556741) 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, 2138899 + ... + 2138938.

It is an arithmetic number, because the mean of its divisors is an integer number (14972433).

Almost surely, 2^85556740 is an apocalyptic number.

It is an amenable number.

85556740 is an abundant number, since it is smaller than the sum of its proper divisors (94112456).

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

85556740 is a wasteful number, since it uses less digits than its factorization.

85556740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277846 (or 4277844 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 85556740 is about 9249.6886434085. The cubic root of 85556740 is about 440.6408361761.

The spelling of 85556740 in words is "eighty-five million, five hundred fifty-six thousand, seven hundred forty".