775226665 has 16 divisors (see below), whose sum is σ = 949628160. Its totient is φ = 607357440.

The previous prime is 775226651. The next prime is 775226671. The reversal of 775226665 is 566622577.

It is not a de Polignac number, because 775226665 - 2¹⁷ = 775095593 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 75097 + ... + 84793.

It is an arithmetic number, because the mean of its divisors is an integer number (59351760).

Almost surely, 2^775226665 is an apocalyptic number.

It is an amenable number.

775226665 is a deficient number, since it is larger than the sum of its proper divisors (174401495).

775226665 is a wasteful number, since it uses less digits than its factorization.

775226665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032.

The product of its digits is 1058400, while the sum is 46.

The square root of 775226665 is about 27842.8925401080. The cubic root of 775226665 is about 918.6348155535.

The spelling of 775226665 in words is "seven hundred seventy-five million, two hundred twenty-six thousand, six hundred sixty-five".