74604643 has 2 divisors, whose sum is σ = 74604644. Its totient is φ = 74604642.

The previous prime is 74604641. The next prime is 74604661. The reversal of 74604643 is 34640647.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74604643 - 2¹ = 74604641 is a prime.

Together with 74604641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 74604599 and 74604608.

It is not a weakly prime, because it can be changed into another prime (74604641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37302321 + 37302322.

It is an arithmetic number, because the mean of its divisors is an integer number (37302322).

Almost surely, 2^74604643 is an apocalyptic number.

74604643 is a deficient number, since it is larger than the sum of its proper divisors (1).

74604643 is an equidigital number, since it uses as much as digits as its factorization.

74604643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 74604643 is about 8637.3979299324. The cubic root of 74604643 is about 420.9740111806.

The spelling of 74604643 in words is "seventy-four million, six hundred four thousand, six hundred forty-three".