775800081 has 24 divisors (see below), whose sum is σ = 1281893184. Its totient is φ = 442896480.

The previous prime is 775800059. The next prime is 775800121. The reversal of 775800081 is 180008577.

775800081 is a `hidden beast` number, since 77 + 580 + 0 + 0 + 8 + 1 = 666.

775800081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 775800081 - 2¹⁷ = 775669009 is a prime.

It is a super-2 number, since 2×775800081² = 1203731531359213122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (775800581) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69190 + ... + 79616.

It is an arithmetic number, because the mean of its divisors is an integer number (53412216).

Almost surely, 2^775800081 is an apocalyptic number.

It is an amenable number.

775800081 is a deficient number, since it is larger than the sum of its proper divisors (506093103).

775800081 is a wasteful number, since it uses less digits than its factorization.

775800081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11621 (or 11618 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 775800081 is about 27853.1879862970. The cubic root of 775800081 is about 918.8612568863.

The spelling of 775800081 in words is "seven hundred seventy-five million, eight hundred thousand, eighty-one".