775712090 has 8 divisors (see below), whose sum is σ = 1396281780. Its totient is φ = 310284832.

The previous prime is 775712083. The next prime is 775712129. The reversal of 775712090 is 90217577.

It can be written as a sum of positive squares in 2 ways, for example, as 712302721 + 63409369 = 26689^2 + 7963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 38785595 + ... + 38785614.

Almost surely, 2^775712090 is an apocalyptic number.

775712090 is a deficient number, since it is larger than the sum of its proper divisors (620569690).

775712090 is a wasteful number, since it uses less digits than its factorization.

775712090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77571216.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 775712090 is about 27851.6083916172. The cubic root of 775712090 is about 918.8265165884.

The spelling of 775712090 in words is "seven hundred seventy-five million, seven hundred twelve thousand, ninety".