86623920 has 120 divisors (see below), whose sum is σ = 300373632. Its totient is φ = 22348800.

The previous prime is 86623913. The next prime is 86623931. The reversal of 86623920 is 2932668.

86623920 is a `hidden beast` number, since 8 + 6 + 623 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20380 + ... + 24260.

Almost surely, 2^86623920 is an apocalyptic number.

86623920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86623920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150186816).

86623920 is an abundant number, since it is smaller than the sum of its proper divisors (213749712).

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

86623920 is a wasteful number, since it uses less digits than its factorization.

86623920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931 (or 3922 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 86623920 is about 9307.1972150589. The cubic root of 86623920 is about 442.4653616475.

The spelling of 86623920 in words is "eighty-six million, six hundred twenty-three thousand, nine hundred twenty".