86864980 has 12 divisors (see below), whose sum is σ = 182416500. Its totient is φ = 34745984.

The previous prime is 86864971. The next prime is 86864989. The reversal of 86864980 is 8946868.

It is an interprime number because it is at equal distance from previous prime (86864971) and next prime (86864989).

It can be written as a sum of positive squares in 2 ways, for example, as 48944016 + 37920964 = 6996^2 + 6158^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86864989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171605 + ... + 2171644.

It is an arithmetic number, because the mean of its divisors is an integer number (15201375).

Almost surely, 2^86864980 is an apocalyptic number.

It is an amenable number.

86864980 is an abundant number, since it is smaller than the sum of its proper divisors (95551520).

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

86864980 is a wasteful number, since it uses less digits than its factorization.

86864980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343258 (or 4343256 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 86864980 is about 9320.1384109894. The cubic root of 86864980 is about 442.8754174115.

The spelling of 86864980 in words is "eighty-six million, eight hundred sixty-four thousand, nine hundred eighty".