85366660 has 12 divisors (see below), whose sum is σ = 179270028. Its totient is φ = 34146656.

The previous prime is 85366657. The next prime is 85366661. The reversal of 85366660 is 6666358.

85366660 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22259524 + 63107136 = 4718^2 + 7944^2 .

85366660 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (85366661) 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, 2134147 + ... + 2134186.

It is an arithmetic number, because the mean of its divisors is an integer number (14939169).

Almost surely, 2^85366660 is an apocalyptic number.

It is an amenable number.

85366660 is an abundant number, since it is smaller than the sum of its proper divisors (93903368).

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

85366660 is a wasteful number, since it uses less digits than its factorization.

85366660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268342 (or 4268340 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 85366660 is about 9239.4079896928. The cubic root of 85366660 is about 440.3142727205.

The spelling of 85366660 in words is "eighty-five million, three hundred sixty-six thousand, six hundred sixty".