776520361 has 16 divisors (see below), whose sum is σ = 810311040. Its totient is φ = 743562880.

The previous prime is 776520337. The next prime is 776520383. The reversal of 776520361 is 163025677.

It is a de Polignac number, because none of the positive numbers 2^k-776520361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 776520361.

It is not an unprimeable number, because it can be changed into a prime (776520391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588060 + ... + 589378.

It is an arithmetic number, because the mean of its divisors is an integer number (50644440).

Almost surely, 2^776520361 is an apocalyptic number.

It is an amenable number.

776520361 is a deficient number, since it is larger than the sum of its proper divisors (33790679).

776520361 is a wasteful number, since it uses less digits than its factorization.

776520361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 776520361 is about 27866.1149247612. The cubic root of 776520361 is about 919.1455365968.

It can be divided in two parts, 776520 and 361, that added together give a triangular number (776881 = T₁₂₄₆).

The spelling of 776520361 in words is "seven hundred seventy-six million, five hundred twenty thousand, three hundred sixty-one".