8405874761 has 2 divisors, whose sum is σ = 8405874762. Its totient is φ = 8405874760.

The previous prime is 8405874751. The next prime is 8405874767. The reversal of 8405874761 is 1674785048.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8394041161 + 11833600 = 91619^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 8405874761 - 2³⁰ = 7332132937 is a prime.

It is not a weakly prime, because it can be changed into another prime (8405874767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4202937380 + 4202937381.

It is an arithmetic number, because the mean of its divisors is an integer number (4202937381).

Almost surely, 2^8405874761 is an apocalyptic number.

It is an amenable number.

8405874761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8405874761 is an equidigital number, since it uses as much as digits as its factorization.

8405874761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The square root of 8405874761 is about 91683.5577461957. The cubic root of 8405874761 is about 2033.2664988842.

The spelling of 8405874761 in words is "eight billion, four hundred five million, eight hundred seventy-four thousand, seven hundred sixty-one".