85573866 has 32 divisors (see below), whose sum is σ = 197543808. Its totient is φ = 24206400.

The previous prime is 85573861. The next prime is 85573871. The reversal of 85573866 is 66837558.

It is an interprime number because it is at equal distance from previous prime (85573861) and next prime (85573871).

It is not an unprimeable number, because it can be changed into a prime (85573861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5845 + ... + 14328.

It is an arithmetic number, because the mean of its divisors is an integer number (6173244).

Almost surely, 2^85573866 is an apocalyptic number.

85573866 is an abundant number, since it is smaller than the sum of its proper divisors (111969942).

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

85573866 is a wasteful number, since it uses less digits than its factorization.

85573866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20286.

The product of its digits is 1209600, while the sum is 48.

The square root of 85573866 is about 9250.6143579764. The cubic root of 85573866 is about 440.6702354243.

The spelling of 85573866 in words is "eighty-five million, five hundred seventy-three thousand, eight hundred sixty-six".