74934257 has 2 divisors, whose sum is σ = 74934258. Its totient is φ = 74934256.

The previous prime is 74934247. The next prime is 74934259. The reversal of 74934257 is 75243947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74926336 + 7921 = 8656^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 74934257 - 2⁴ = 74934241 is a prime.

Together with 74934259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74934259) 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, 37467128 + 37467129.

It is an arithmetic number, because the mean of its divisors is an integer number (37467129).

Almost surely, 2^74934257 is an apocalyptic number.

It is an amenable number.

74934257 is a deficient number, since it is larger than the sum of its proper divisors (1).

74934257 is an equidigital number, since it uses as much as digits as its factorization.

74934257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 74934257 is about 8656.4575318083. The cubic root of 74934257 is about 421.5930748652.

The spelling of 74934257 in words is "seventy-four million, nine hundred thirty-four thousand, two hundred fifty-seven".