774217427 has 2 divisors, whose sum is σ = 774217428. Its totient is φ = 774217426.

The previous prime is 774217403. The next prime is 774217463. The reversal of 774217427 is 724712477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 774217427 - 2⁶ = 774217363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (774217027) 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, 387108713 + 387108714.

It is an arithmetic number, because the mean of its divisors is an integer number (387108714).

Almost surely, 2^774217427 is an apocalyptic number.

774217427 is a deficient number, since it is larger than the sum of its proper divisors (1).

774217427 is an equidigital number, since it uses as much as digits as its factorization.

774217427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153664, while the sum is 41.

The square root of 774217427 is about 27824.7628381627. The cubic root of 774217427 is about 918.2359972358.

It can be divided in two parts, 77421 and 7427, that added together give a palindrome (84848).

The spelling of 774217427 in words is "seven hundred seventy-four million, two hundred seventeen thousand, four hundred twenty-seven".