791785285 has 16 divisors (see below), whose sum is σ = 1025020656. Its totient is φ = 584915968.

The previous prime is 791785277. The next prime is 791785301. The reversal of 791785285 is 582587197.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 216648961 + 575136324 = 14719^2 + 23982^2 .

It is a cyclic number.

It is not a de Polignac number, because 791785285 - 2³ = 791785277 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 83374 + ... + 92383.

It is an arithmetic number, because the mean of its divisors is an integer number (64063791).

Almost surely, 2^791785285 is an apocalyptic number.

It is an amenable number.

791785285 is a deficient number, since it is larger than the sum of its proper divisors (233235371).

791785285 is a wasteful number, since it uses less digits than its factorization.

791785285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175832.

The product of its digits is 1411200, while the sum is 52.

The square root of 791785285 is about 28138.6795177030. The cubic root of 791785285 is about 925.1293843851.

The spelling of 791785285 in words is "seven hundred ninety-one million, seven hundred eighty-five thousand, two hundred eighty-five".