2805206769 has 16 divisors (see below), whose sum is σ = 4159728640. Its totient is φ = 1868397840.

The previous prime is 2805206749. The next prime is 2805206783. The reversal of 2805206769 is 9676025082.

2805206769 is a `hidden beast` number, since 2 + 8 + 0 + 520 + 67 + 69 = 666.

2805206769 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 2805206769 - 2⁷ = 2805206641 is a prime.

It is a super-2 number, since 2×2805206769² = 15738370033686838722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805206749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18442 + ... + 77139.

It is an arithmetic number, because the mean of its divisors is an integer number (259983040).

Almost surely, 2^2805206769 is an apocalyptic number.

It is an amenable number.

2805206769 is a deficient number, since it is larger than the sum of its proper divisors (1354521871).

2805206769 is a wasteful number, since it uses less digits than its factorization.

2805206769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96677 (or 96671 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2805206769 is about 52964.2027127757. The cubic root of 2805206769 is about 1410.3328639213.

The spelling of 2805206769 in words is "two billion, eight hundred five million, two hundred six thousand, seven hundred sixty-nine".