73645043 has 2 divisors, whose sum is σ = 73645044. Its totient is φ = 73645042.

The previous prime is 73645031. The next prime is 73645049. The reversal of 73645043 is 34054637.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73645043 - 2⁴ = 73645027 is a prime.

It is not a weakly prime, because it can be changed into another prime (73645049) 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, 36822521 + 36822522.

It is an arithmetic number, because the mean of its divisors is an integer number (36822522).

Almost surely, 2^73645043 is an apocalyptic number.

73645043 is a deficient number, since it is larger than the sum of its proper divisors (1).

73645043 is an equidigital number, since it uses as much as digits as its factorization.

73645043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 73645043 is about 8581.6690101635. The cubic root of 73645043 is about 419.1612949224.

The spelling of 73645043 in words is "seventy-three million, six hundred forty-five thousand, forty-three".