86872791 has 8 divisors (see below), whose sum is σ = 116100864. Its totient is φ = 57779960.

The previous prime is 86872789. The next prime is 86872829. The reversal of 86872791 is 19727868.

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 86872791 - 2¹ = 86872789 is a prime.

It is a super-2 number, since 2×86872791² = 15093763632259362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86872791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86872391) 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, 32301 + ... + 34886.

It is an arithmetic number, because the mean of its divisors is an integer number (14512608).

Almost surely, 2^86872791 is an apocalyptic number.

86872791 is a deficient number, since it is larger than the sum of its proper divisors (29228073).

86872791 is a wasteful number, since it uses less digits than its factorization.

86872791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67621.

The product of its digits is 338688, while the sum is 48.

The square root of 86872791 is about 9320.5574404110. The cubic root of 86872791 is about 442.8886916378. Note that the first 3 decimals are identical.

The spelling of 86872791 in words is "eighty-six million, eight hundred seventy-two thousand, seven hundred ninety-one".