86324857 has 2 divisors, whose sum is σ = 86324858. Its totient is φ = 86324856.

The previous prime is 86324831. The next prime is 86324891. The reversal of 86324857 is 75842368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72863296 + 13461561 = 8536^2 + 3669^2 .

It is a cyclic number.

It is not a de Polignac number, because 86324857 - 2²³ = 77936249 is a prime.

It is not a weakly prime, because it can be changed into another prime (86321857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43162428 + 43162429.

It is an arithmetic number, because the mean of its divisors is an integer number (43162429).

Almost surely, 2^86324857 is an apocalyptic number.

It is an amenable number.

86324857 is a deficient number, since it is larger than the sum of its proper divisors (1).

86324857 is an equidigital number, since it uses as much as digits as its factorization.

86324857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 86324857 is about 9291.1171018344. The cubic root of 86324857 is about 441.9555810075.

The spelling of 86324857 in words is "eighty-six million, three hundred twenty-four thousand, eight hundred fifty-seven".