85890810 has 32 divisors (see below), whose sum is σ = 206660160. Its totient is φ = 22846208.

The previous prime is 85890799. The next prime is 85890821. The reversal of 85890810 is 1809858.

It is an interprime number because it is at equal distance from previous prime (85890799) and next prime (85890821).

It is a super-2 number, since 2×85890810² = 14754462484912200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9154 + ... + 15986.

It is an arithmetic number, because the mean of its divisors is an integer number (6458130).

Almost surely, 2^85890810 is an apocalyptic number.

85890810 is an abundant number, since it is smaller than the sum of its proper divisors (120769350).

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

85890810 is a wasteful number, since it uses less digits than its factorization.

85890810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 85890810 is about 9267.7294954050. The cubic root of 85890810 is about 441.2136089102.

The spelling of 85890810 in words is "eighty-five million, eight hundred ninety thousand, eight hundred ten".