86596981 has 4 divisors (see below), whose sum is σ = 89390464. Its totient is φ = 83803500.

The previous prime is 86596967. The next prime is 86596999. The reversal of 86596981 is 18969568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86596981 - 2¹¹ = 86594933 is a prime.

It is a super-2 number, since 2×86596981² = 14998074236628722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86596381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396695 + ... + 1396756.

It is an arithmetic number, because the mean of its divisors is an integer number (22347616).

Almost surely, 2^86596981 is an apocalyptic number.

It is an amenable number.

86596981 is a deficient number, since it is larger than the sum of its proper divisors (2793483).

86596981 is a wasteful number, since it uses less digits than its factorization.

86596981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793482.

The product of its digits is 933120, while the sum is 52.

The square root of 86596981 is about 9305.7498891814. The cubic root of 86596981 is about 442.4194897521.

The spelling of 86596981 in words is "eighty-six million, five hundred ninety-six thousand, nine hundred eighty-one".