74473643 has 2 divisors, whose sum is σ = 74473644. Its totient is φ = 74473642.

The previous prime is 74473621. The next prime is 74473657. The reversal of 74473643 is 34637447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74473643 - 2⁸ = 74473387 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74473597 and 74473606.

It is not a weakly prime, because it can be changed into another prime (74473043) 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, 37236821 + 37236822.

It is an arithmetic number, because the mean of its divisors is an integer number (37236822).

Almost surely, 2^74473643 is an apocalyptic number.

74473643 is a deficient number, since it is larger than the sum of its proper divisors (1).

74473643 is an equidigital number, since it uses as much as digits as its factorization.

74473643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 38.

The square root of 74473643 is about 8629.8112957353. The cubic root of 74473643 is about 420.7274675202.

The spelling of 74473643 in words is "seventy-four million, four hundred seventy-three thousand, six hundred forty-three".