86173680 has 80 divisors (see below), whose sum is σ = 282865824. Its totient is φ = 21626880.

The previous prime is 86173673. The next prime is 86173729. The reversal of 86173680 is 8637168.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 6481 + ... + 14640.

Almost surely, 2^86173680 is an apocalyptic number.

86173680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86173680 is an abundant number, since it is smaller than the sum of its proper divisors (196692144).

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

86173680 is a wasteful number, since it uses less digits than its factorization.

86173680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21154 (or 21148 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 86173680 is about 9282.9779704575. The cubic root of 86173680 is about 441.6974376726.

The spelling of 86173680 in words is "eighty-six million, one hundred seventy-three thousand, six hundred eighty".