74938217 has 2 divisors, whose sum is σ = 74938218. Its totient is φ = 74938216.

The previous prime is 74938187. The next prime is 74938219. The reversal of 74938217 is 71283947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74926336 + 11881 = 8656^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 74938217 - 2⁶ = 74938153 is a prime.

Together with 74938219, 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 (74938219) 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, 37469108 + 37469109.

It is an arithmetic number, because the mean of its divisors is an integer number (37469109).

Almost surely, 2^74938217 is an apocalyptic number.

It is an amenable number.

74938217 is a deficient number, since it is larger than the sum of its proper divisors (1).

74938217 is an equidigital number, since it uses as much as digits as its factorization.

74938217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 74938217 is about 8656.6862597648. The cubic root of 74938217 is about 421.6005012824.

The spelling of 74938217 in words is "seventy-four million, nine hundred thirty-eight thousand, two hundred seventeen".