86723880 has 64 divisors (see below), whose sum is σ = 260807040. Its totient is φ = 23069952.

The previous prime is 86723843. The next prime is 86723881. The reversal of 86723880 is 8832768.

It is not an unprimeable number, because it can be changed into a prime (86723881) 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, 77082 + ... + 78198.

It is an arithmetic number, because the mean of its divisors is an integer number (4075110).

Almost surely, 2^86723880 is an apocalyptic number.

It is an amenable number.

86723880 is an abundant number, since it is smaller than the sum of its proper divisors (174083160).

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

86723880 is a wasteful number, since it uses less digits than its factorization.

86723880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778 (or 1774 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 86723880 is about 9312.5657044662. The cubic root of 86723880 is about 442.6354910828.

The spelling of 86723880 in words is "eighty-six million, seven hundred twenty-three thousand, eight hundred eighty".