775305081 has 8 divisors (see below), whose sum is σ = 1148600160. Its totient is φ = 516870036.

The previous prime is 775305049. The next prime is 775305103. The reversal of 775305081 is 180503577.

775305081 is a `hidden beast` number, since 77 + 530 + 50 + 8 + 1 = 666.

It is not a de Polignac number, because 775305081 - 2⁵ = 775305049 is a prime.

It is a super-2 number, since 2×775305081² = 1202195937248833122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (775305001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14357475 + ... + 14357528.

It is an arithmetic number, because the mean of its divisors is an integer number (143575020).

Almost surely, 2^775305081 is an apocalyptic number.

It is an amenable number.

775305081 is a deficient number, since it is larger than the sum of its proper divisors (373295079).

775305081 is a wasteful number, since it uses less digits than its factorization.

775305081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28715012 (or 28715006 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 775305081 is about 27844.3006915239. The cubic root of 775305081 is about 918.6657885331.

The spelling of 775305081 in words is "seven hundred seventy-five million, three hundred five thousand, eighty-one".