86397857 has 8 divisors (see below), whose sum is σ = 106335936. Its totient is φ = 68358672.

The previous prime is 86397853. The next prime is 86397877. The reversal of 86397857 is 75879368.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86397857 - 2² = 86397853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86397799 and 86397808.

It is not an unprimeable number, because it can be changed into a prime (86397853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474623 + ... + 474804.

It is an arithmetic number, because the mean of its divisors is an integer number (13291992).

Almost surely, 2^86397857 is an apocalyptic number.

It is an amenable number.

86397857 is a deficient number, since it is larger than the sum of its proper divisors (19938079).

86397857 is a wasteful number, since it uses less digits than its factorization.

86397857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949447.

The product of its digits is 2540160, while the sum is 53.

The square root of 86397857 is about 9295.0447551370. The cubic root of 86397857 is about 442.0801247698.

The spelling of 86397857 in words is "eighty-six million, three hundred ninety-seven thousand, eight hundred fifty-seven".