86997040 has 80 divisors (see below), whose sum is σ = 227360448. Its totient is φ = 30716928.

The previous prime is 86997037. The next prime is 86997049. The reversal of 86997040 is 4079968.

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

It is not an unprimeable number, because it can be changed into a prime (86997049) 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 15 ways as a sum of consecutive naturals, for example, 22102 + ... + 25738.

Almost surely, 2^86997040 is an apocalyptic number.

86997040 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 86997040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113680224).

86997040 is an abundant number, since it is smaller than the sum of its proper divisors (140363408).

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

86997040 is a wasteful number, since it uses less digits than its factorization.

86997040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686 (or 3680 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 86997040 is about 9327.2203790840. The cubic root of 86997040 is about 443.0997368630.

The spelling of 86997040 in words is "eighty-six million, nine hundred ninety-seven thousand, forty".