86797791 has 48 divisors (see below), whose sum is σ = 138028800. Its totient is φ = 53882928.

The previous prime is 86797787. The next prime is 86797807. The reversal of 86797791 is 19779768.

It is not a de Polignac number, because 86797791 - 2² = 86797787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86797721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 842646 + ... + 842748.

It is an arithmetic number, because the mean of its divisors is an integer number (2875600).

Almost surely, 2^86797791 is an apocalyptic number.

86797791 is a deficient number, since it is larger than the sum of its proper divisors (51231009).

86797791 is a wasteful number, since it uses less digits than its factorization.

86797791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 188 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 54.

The square root of 86797791 is about 9316.5332071538. The cubic root of 86797791 is about 442.7612017181.

The spelling of 86797791 in words is "eighty-six million, seven hundred ninety-seven thousand, seven hundred ninety-one".