86850890 has 32 divisors (see below), whose sum is σ = 180520704. Its totient is φ = 29468160.

The previous prime is 86850889. The next prime is 86850899. The reversal of 86850890 is 9805868.

It is not an unprimeable number, because it can be changed into a prime (86850899) 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, 395 + ... + 13185.

It is an arithmetic number, because the mean of its divisors is an integer number (5641272).

Almost surely, 2^86850890 is an apocalyptic number.

86850890 is an abundant number, since it is smaller than the sum of its proper divisors (93669814).

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

86850890 is a wasteful number, since it uses less digits than its factorization.

86850890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 86850890 is about 9319.3824902726. The cubic root of 86850890 is about 442.8514704689.

The spelling of 86850890 in words is "eighty-six million, eight hundred fifty thousand, eight hundred ninety".