74347771 has 2 divisors, whose sum is σ = 74347772. Its totient is φ = 74347770.

The previous prime is 74347759. The next prime is 74347781. The reversal of 74347771 is 17774347.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74347771 - 2⁵ = 74347739 is a prime.

It is not a weakly prime, because it can be changed into another prime (74347751) 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, 37173885 + 37173886.

It is an arithmetic number, because the mean of its divisors is an integer number (37173886).

Almost surely, 2^74347771 is an apocalyptic number.

74347771 is a deficient number, since it is larger than the sum of its proper divisors (1).

74347771 is an equidigital number, since it uses as much as digits as its factorization.

74347771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115248, while the sum is 40.

The square root of 74347771 is about 8622.5153522624. The cubic root of 74347771 is about 420.4903023105.

The spelling of 74347771 in words is "seventy-four million, three hundred forty-seven thousand, seven hundred seventy-one".