74774423 has 2 divisors, whose sum is σ = 74774424. Its totient is φ = 74774422.

The previous prime is 74774419. The next prime is 74774429. The reversal of 74774423 is 32447747.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74774423 - 2² = 74774419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74774429) 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, 37387211 + 37387212.

It is an arithmetic number, because the mean of its divisors is an integer number (37387212).

Almost surely, 2^74774423 is an apocalyptic number.

74774423 is a deficient number, since it is larger than the sum of its proper divisors (1).

74774423 is an equidigital number, since it uses as much as digits as its factorization.

74774423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 38.

The square root of 74774423 is about 8647.2205361029. The cubic root of 74774423 is about 421.2931102584.

The spelling of 74774423 in words is "seventy-four million, seven hundred seventy-four thousand, four hundred twenty-three".