864056197 has 2 divisors, whose sum is σ = 864056198. Its totient is φ = 864056196.

The previous prime is 864056117. The next prime is 864056231. The reversal of 864056197 is 791650468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724201921 + 139854276 = 26911^2 + 11826^2 .

It is a cyclic number.

It is not a de Polignac number, because 864056197 - 2⁷ = 864056069 is a prime.

It is a super-2 number, since 2×864056197² = 1493186223148205618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864056107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432028098 + 432028099.

It is an arithmetic number, because the mean of its divisors is an integer number (432028099).

Almost surely, 2^864056197 is an apocalyptic number.

It is an amenable number.

864056197 is a deficient number, since it is larger than the sum of its proper divisors (1).

864056197 is an equidigital number, since it uses as much as digits as its factorization.

864056197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 864056197 is about 29394.8328282370. The cubic root of 864056197 is about 952.4612805427.

The spelling of 864056197 in words is "eight hundred sixty-four million, fifty-six thousand, one hundred ninety-seven".