74345069 has 2 divisors, whose sum is σ = 74345070. Its totient is φ = 74345068.

The previous prime is 74345057. The next prime is 74345071. The reversal of 74345069 is 96054347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73324969 + 1020100 = 8563^2 + 1010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74345069 is a prime.

It is a super-2 number, since 2×74345069² = 11054378569229522, which contains 22 as substring.

Together with 74345071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74305069) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37172534 + 37172535.

It is an arithmetic number, because the mean of its divisors is an integer number (37172535).

Almost surely, 2^74345069 is an apocalyptic number.

It is an amenable number.

74345069 is a deficient number, since it is larger than the sum of its proper divisors (1).

74345069 is an equidigital number, since it uses as much as digits as its factorization.

74345069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 74345069 is about 8622.3586680212. The cubic root of 74345069 is about 420.4852083288.

The spelling of 74345069 in words is "seventy-four million, three hundred forty-five thousand, sixty-nine".