86811193 has 6 divisors (see below), whose sum is σ = 100984506. Its totient is φ = 74409552.

The previous prime is 86811187. The next prime is 86811229. The reversal of 86811193 is 39111868.

It can be written as a sum of positive squares in only one way, i.e., 81667369 + 5143824 = 9037^2 + 2268^2 .

It is not a de Polignac number, because 86811193 - 2⁵ = 86811161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86811103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 885780 + ... + 885877.

It is an arithmetic number, because the mean of its divisors is an integer number (16830751).

Almost surely, 2^86811193 is an apocalyptic number.

It is an amenable number.

86811193 is a deficient number, since it is larger than the sum of its proper divisors (14173313).

86811193 is a wasteful number, since it uses less digits than its factorization.

86811193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771671 (or 1771664 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The square root of 86811193 is about 9317.2524383533. The cubic root of 86811193 is about 442.7839887044.

The spelling of 86811193 in words is "eighty-six million, eight hundred eleven thousand, one hundred ninety-three".