86861290 has 32 divisors (see below), whose sum is σ = 162074880. Its totient is φ = 33493824.

The previous prime is 86861263. The next prime is 86861297. The reversal of 86861290 is 9216868.

It is not an unprimeable number, because it can be changed into a prime (86861297) 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, 32692 + ... + 35248.

It is an arithmetic number, because the mean of its divisors is an integer number (5064840).

Almost surely, 2^86861290 is an apocalyptic number.

86861290 is a deficient number, since it is larger than the sum of its proper divisors (75213590).

86861290 is a wasteful number, since it uses less digits than its factorization.

86861290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 86861290 is about 9319.9404504535. The cubic root of 86861290 is about 442.8691462482.

The spelling of 86861290 in words is "eighty-six million, eight hundred sixty-one thousand, two hundred ninety".