74007761 has 2 divisors, whose sum is σ = 74007762. Its totient is φ = 74007760.

The previous prime is 74007707. The next prime is 74007763. The reversal of 74007761 is 16770047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56535361 + 17472400 = 7519^2 + 4180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74007761 is a prime.

It is a Sophie Germain prime.

Together with 74007763, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (74007763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37003880 + 37003881.

It is an arithmetic number, because the mean of its divisors is an integer number (37003881).

Almost surely, 2^74007761 is an apocalyptic number.

It is an amenable number.

74007761 is a deficient number, since it is larger than the sum of its proper divisors (1).

74007761 is an equidigital number, since it uses as much as digits as its factorization.

74007761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 74007761 is about 8602.7763541778. The cubic root of 74007761 is about 419.8483220251.

The spelling of 74007761 in words is "seventy-four million, seven thousand, seven hundred sixty-one".