2804655681 has 27 divisors (see below), whose sum is σ = 4112907201. Its totient is φ = 1841702184.

The previous prime is 2804655671. The next prime is 2804655731. The reversal of 2804655681 is 1865564082.

The square root of 2804655681 is 52959.

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

2804655681 is a `hidden beast` number, since 2 + 80 + 4 + 6 + 5 + 568 + 1 = 666.

It is not a de Polignac number, because 2804655681 - 2¹¹ = 2804653633 is a prime.

It is a super-2 number, since 2×2804655681² = 15732186977931147522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2804655671) 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, 20177310 + ... + 20177448.

Almost surely, 2^2804655681 is an apocalyptic number.

2804655681 is the 52959-th square number.

2804655681 is the 26480-th centered octagonal number.

It is an amenable number.

2804655681 is a deficient number, since it is larger than the sum of its proper divisors (1308251520).

2804655681 is an equidigital number, since it uses as much as digits as its factorization.

2804655681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The cubic root of 2804655681 is about 1410.2405037162.

It can be divided in two parts, 280465 and 5681, that added together give a triangular number (286146 = T₇₅₆).

The spelling of 2804655681 in words is "two billion, eight hundred four million, six hundred fifty-five thousand, six hundred eighty-one".