864671497 has 2 divisors, whose sum is σ = 864671498. Its totient is φ = 864671496.

The previous prime is 864671471. The next prime is 864671503. The reversal of 864671497 is 794176468.

864671497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 785176441 + 79495056 = 28021^2 + 8916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864671497 is a prime.

It is not a weakly prime, because it can be changed into another prime (864671597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432335748 + 432335749.

It is an arithmetic number, because the mean of its divisors is an integer number (432335749).

Almost surely, 2^864671497 is an apocalyptic number.

It is an amenable number.

864671497 is a deficient number, since it is larger than the sum of its proper divisors (1).

864671497 is an equidigital number, since it uses as much as digits as its factorization.

864671497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 864671497 is about 29405.2970908304. The cubic root of 864671497 is about 952.6873115089.

The spelling of 864671497 in words is "eight hundred sixty-four million, six hundred seventy-one thousand, four hundred ninety-seven".