86500981 has 8 divisors (see below), whose sum is σ = 104673600. Its totient is φ = 69782208.

The previous prime is 86500979. The next prime is 86501033. The reversal of 86500981 is 18900568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86500981 - 2¹ = 86500979 is a prime.

It is a super-2 number, since 2×86500981² = 14964839427924722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86500981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86500481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363331 + ... + 363568.

It is an arithmetic number, because the mean of its divisors is an integer number (13084200).

Almost surely, 2^86500981 is an apocalyptic number.

It is an amenable number.

86500981 is a deficient number, since it is larger than the sum of its proper divisors (18172619).

86500981 is a wasteful number, since it uses less digits than its factorization.

86500981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726923.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 86500981 is about 9300.5903576063. The cubic root of 86500981 is about 442.2559429598.

The spelling of 86500981 in words is "eighty-six million, five hundred thousand, nine hundred eighty-one".