864958651 has 2 divisors, whose sum is σ = 864958652. Its totient is φ = 864958650.

The previous prime is 864958607. The next prime is 864958681. The reversal of 864958651 is 156859468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864958651 - 2¹⁵ = 864925883 is a prime.

It is not a weakly prime, because it can be changed into another prime (864958681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432479325 + 432479326.

It is an arithmetic number, because the mean of its divisors is an integer number (432479326).

Almost surely, 2^864958651 is an apocalyptic number.

864958651 is a deficient number, since it is larger than the sum of its proper divisors (1).

864958651 is an equidigital number, since it uses as much as digits as its factorization.

864958651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 52.

The square root of 864958651 is about 29410.1793772156. The cubic root of 864958651 is about 952.7927610718.

The spelling of 864958651 in words is "eight hundred sixty-four million, nine hundred fifty-eight thousand, six hundred fifty-one".