864052997 has 2 divisors, whose sum is σ = 864052998. Its totient is φ = 864052996.

The previous prime is 864052993. The next prime is 864053059. The reversal of 864052997 is 799250468.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558187876 + 305865121 = 23626^2 + 17489^2 .

It is a cyclic number.

It is not a de Polignac number, because 864052997 - 2² = 864052993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864052993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432026498 + 432026499.

It is an arithmetic number, because the mean of its divisors is an integer number (432026499).

Almost surely, 2^864052997 is an apocalyptic number.

It is an amenable number.

864052997 is a deficient number, since it is larger than the sum of its proper divisors (1).

864052997 is an equidigital number, since it uses as much as digits as its factorization.

864052997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 864052997 is about 29394.7783968514. The cubic root of 864052997 is about 952.4601047396.

The spelling of 864052997 in words is "eight hundred sixty-four million, fifty-two thousand, nine hundred ninety-seven".