86112857 has 4 divisors (see below), whose sum is σ = 86741556. Its totient is φ = 85484160.

The previous prime is 86112853. The next prime is 86112869. The reversal of 86112857 is 75821168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25210441 + 60902416 = 5021^2 + 7804^2 .

It is a cyclic number.

It is not a de Polignac number, because 86112857 - 2² = 86112853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86112857.

It is not an unprimeable number, because it can be changed into a prime (86112853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314144 + ... + 314417.

It is an arithmetic number, because the mean of its divisors is an integer number (21685389).

Almost surely, 2^86112857 is an apocalyptic number.

It is an amenable number.

86112857 is a deficient number, since it is larger than the sum of its proper divisors (628699).

86112857 is a wasteful number, since it uses less digits than its factorization.

86112857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628698.

The product of its digits is 26880, while the sum is 38.

The square root of 86112857 is about 9279.7013421769. The cubic root of 86112857 is about 441.5934937676.

The spelling of 86112857 in words is "eighty-six million, one hundred twelve thousand, eight hundred fifty-seven".