85866684 has 24 divisors (see below), whose sum is σ = 200519760. Its totient is φ = 28598784.

The previous prime is 85866679. The next prime is 85866689. The reversal of 85866684 is 48666858.

It is an interprime number because it is at equal distance from previous prime (85866679) and next prime (85866689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85866689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18732 + ... + 22860.

It is an arithmetic number, because the mean of its divisors is an integer number (8354990).

Almost surely, 2^85866684 is an apocalyptic number.

It is an amenable number.

85866684 is an abundant number, since it is smaller than the sum of its proper divisors (114653076).

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

85866684 is a wasteful number, since it uses less digits than its factorization.

85866684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869 (or 5867 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The square root of 85866684 is about 9266.4277906861. The cubic root of 85866684 is about 441.1722939882.

The spelling of 85866684 in words is "eighty-five million, eight hundred sixty-six thousand, six hundred eighty-four".