86781795 has 16 divisors (see below), whose sum is σ = 139145472. Its totient is φ = 46185440.

The previous prime is 86781791. The next prime is 86781811. The reversal of 86781795 is 59718768.

It is not a de Polignac number, because 86781795 - 2² = 86781791 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86781791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1474 + ... + 13256.

It is an arithmetic number, because the mean of its divisors is an integer number (8696592).

Almost surely, 2^86781795 is an apocalyptic number.

86781795 is a deficient number, since it is larger than the sum of its proper divisors (52363677).

86781795 is a wasteful number, since it uses less digits than its factorization.

86781795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12282.

The product of its digits is 846720, while the sum is 51.

The square root of 86781795 is about 9315.6746937621. The cubic root of 86781795 is about 442.7340011668.

The spelling of 86781795 in words is "eighty-six million, seven hundred eighty-one thousand, seven hundred ninety-five".