864235297 has 2 divisors, whose sum is σ = 864235298. Its totient is φ = 864235296.

The previous prime is 864235289. The next prime is 864235357. The reversal of 864235297 is 792532468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 764854336 + 99380961 = 27656^2 + 9969^2 .

It is a cyclic number.

It is not a de Polignac number, because 864235297 - 2³ = 864235289 is a prime.

It is not a weakly prime, because it can be changed into another prime (864235277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432117648 + 432117649.

It is an arithmetic number, because the mean of its divisors is an integer number (432117649).

Almost surely, 2^864235297 is an apocalyptic number.

It is an amenable number.

864235297 is a deficient number, since it is larger than the sum of its proper divisors (1).

864235297 is an equidigital number, since it uses as much as digits as its factorization.

864235297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 864235297 is about 29397.8791241817. The cubic root of 864235297 is about 952.5270841448.

The spelling of 864235297 in words is "eight hundred sixty-four million, two hundred thirty-five thousand, two hundred ninety-seven".