75774961 has 2 divisors, whose sum is σ = 75774962. Its totient is φ = 75774960.

The previous prime is 75774917. The next prime is 75774973. The reversal of 75774961 is 16947757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55353600 + 20421361 = 7440^2 + 4519^2 .

It is a cyclic number.

It is not a de Polignac number, because 75774961 - 2⁹ = 75774449 is a prime.

It is not a weakly prime, because it can be changed into another prime (75774911) 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 as a sum of consecutive naturals, namely, 37887480 + 37887481.

It is an arithmetic number, because the mean of its divisors is an integer number (37887481).

Almost surely, 2^75774961 is an apocalyptic number.

It is an amenable number.

75774961 is a deficient number, since it is larger than the sum of its proper divisors (1).

75774961 is an equidigital number, since it uses as much as digits as its factorization.

75774961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 46.

The square root of 75774961 is about 8704.8814466367. The cubic root of 75774961 is about 423.1638637323.

The spelling of 75774961 in words is "seventy-five million, seven hundred seventy-four thousand, nine hundred sixty-one".