74990771 has 2 divisors, whose sum is σ = 74990772. Its totient is φ = 74990770.

The previous prime is 74990719. The next prime is 74990779. The reversal of 74990771 is 17709947.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74990771 - 2¹⁴ = 74974387 is a prime.

It is not a weakly prime, because it can be changed into another prime (74990779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37495385 + 37495386.

It is an arithmetic number, because the mean of its divisors is an integer number (37495386).

Almost surely, 2^74990771 is an apocalyptic number.

74990771 is a deficient number, since it is larger than the sum of its proper divisors (1).

74990771 is an equidigital number, since it uses as much as digits as its factorization.

74990771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 74990771 is about 8659.7211848881. The cubic root of 74990771 is about 421.6990340745.

The spelling of 74990771 in words is "seventy-four million, nine hundred ninety thousand, seven hundred seventy-one".