275664859 has 2 divisors, whose sum is σ = 275664860. Its totient is φ = 275664858.

The previous prime is 275664847. The next prime is 275664869. The reversal of 275664859 is 958466572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 275664859 - 2⁷ = 275664731 is a prime.

It is a super-2 number, since 2×275664859² = 151982228974979762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (275664869) 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, 137832429 + 137832430.

It is an arithmetic number, because the mean of its divisors is an integer number (137832430).

Almost surely, 2^275664859 is an apocalyptic number.

275664859 is a deficient number, since it is larger than the sum of its proper divisors (1).

275664859 is an equidigital number, since it uses as much as digits as its factorization.

275664859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 52.

The square root of 275664859 is about 16603.1581032043. The cubic root of 275664859 is about 650.8193682756.

The spelling of 275664859 in words is "two hundred seventy-five million, six hundred sixty-four thousand, eight hundred fifty-nine".