864918757 has 2 divisors, whose sum is σ = 864918758. Its totient is φ = 864918756.

The previous prime is 864918731. The next prime is 864918793. The reversal of 864918757 is 757819468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862361956 + 2556801 = 29366^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 864918757 - 2⁷ = 864918629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 864918698 and 864918707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864918157) 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, 432459378 + 432459379.

It is an arithmetic number, because the mean of its divisors is an integer number (432459379).

Almost surely, 2^864918757 is an apocalyptic number.

It is an amenable number.

864918757 is a deficient number, since it is larger than the sum of its proper divisors (1).

864918757 is an equidigital number, since it uses as much as digits as its factorization.

864918757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 55.

The square root of 864918757 is about 29409.5011348374. The cubic root of 864918757 is about 952.7781124722.

The spelling of 864918757 in words is "eight hundred sixty-four million, nine hundred eighteen thousand, seven hundred fifty-seven".