769563081 has 27 divisors (see below), whose sum is σ = 1294054983. Its totient is φ = 439417440.

The previous prime is 769563079. The next prime is 769563103. The reversal of 769563081 is 180365967.

It is a happy number.

The square root of 769563081 is 27741.

It is a perfect power (a square), and thus also a powerful number.

769563081 is a `hidden beast` number, since 7 + 6 + 9 + 5 + 630 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 712409481 + 57153600 = 26691^2 + 7560^2 .

It is not a de Polignac number, because 769563081 - 2¹ = 769563079 is a prime.

It is a super-2 number, since 2×769563081² = 1184454671276425122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (769563281) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 581901 + ... + 583221.

Almost surely, 2^769563081 is an apocalyptic number.

769563081 is the 27741-st square number.

769563081 is the 13871-st centered octagonal number.

It is an amenable number.

769563081 is a deficient number, since it is larger than the sum of its proper divisors (524491902).

769563081 is an equidigital number, since it uses as much as digits as its factorization.

769563081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The cubic root of 769563081 is about 916.3922511845.

The spelling of 769563081 in words is "seven hundred sixty-nine million, five hundred sixty-three thousand, eighty-one".