2783074661 has 2 divisors, whose sum is σ = 2783074662. Its totient is φ = 2783074660.

The previous prime is 2783074633. The next prime is 2783074673. The reversal of 2783074661 is 1664703872.

2783074661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1690772161 + 1092302500 = 41119^2 + 33050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2783074661 - 2¹⁸ = 2782812517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2783074691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391537330 + 1391537331.

It is an arithmetic number, because the mean of its divisors is an integer number (1391537331).

Almost surely, 2^2783074661 is an apocalyptic number.

It is an amenable number.

2783074661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2783074661 is an equidigital number, since it uses as much as digits as its factorization.

2783074661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 2783074661 is about 52754.8543832698. The cubic root of 2783074661 is about 1406.6140543639.

The spelling of 2783074661 in words is "two billion, seven hundred eighty-three million, seventy-four thousand, six hundred sixty-one".