74073691 has 2 divisors, whose sum is σ = 74073692. Its totient is φ = 74073690.

The previous prime is 74073689. The next prime is 74073719. The reversal of 74073691 is 19637047.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74073691 - 2¹ = 74073689 is a prime.

Together with 74073689, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74073691.

It is not a weakly prime, because it can be changed into another prime (74073631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37036845 + 37036846.

It is an arithmetic number, because the mean of its divisors is an integer number (37036846).

Almost surely, 2^74073691 is an apocalyptic number.

74073691 is a deficient number, since it is larger than the sum of its proper divisors (1).

74073691 is an equidigital number, since it uses as much as digits as its factorization.

74073691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 74073691 is about 8606.6074036173. The cubic root of 74073691 is about 419.9729593324.

The spelling of 74073691 in words is "seventy-four million, seventy-three thousand, six hundred ninety-one".