86678793 has 6 divisors (see below), whose sum is σ = 125202714. Its totient is φ = 57785856.

The previous prime is 86678773. The next prime is 86678819. The reversal of 86678793 is 39787668.

It can be written as a sum of positive squares in only one way, i.e., 66536649 + 20142144 = 8157^2 + 4488^2 .

It is not a de Polignac number, because 86678793 - 2⁹ = 86678281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86678773) 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, 4815480 + ... + 4815497.

It is an arithmetic number, because the mean of its divisors is an integer number (20867119).

Almost surely, 2^86678793 is an apocalyptic number.

It is an amenable number.

86678793 is a deficient number, since it is larger than the sum of its proper divisors (38523921).

86678793 is a wasteful number, since it uses less digits than its factorization.

86678793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9630983 (or 9630980 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 86678793 is about 9310.1446283073. The cubic root of 86678793 is about 442.5587703230.

The spelling of 86678793 in words is "eighty-six million, six hundred seventy-eight thousand, seven hundred ninety-three".