73743073 has 4 divisors (see below), whose sum is σ = 73761028. Its totient is φ = 73725120.

The previous prime is 73743071. The next prime is 73743101. The reversal of 73743073 is 37034737.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47651409 + 26091664 = 6903^2 + 5108^2 .

It is a cyclic number.

It is not a de Polignac number, because 73743073 - 2¹ = 73743071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73743071) 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 in 3 ways as a sum of consecutive naturals, for example, 565 + ... + 12157.

It is an arithmetic number, because the mean of its divisors is an integer number (18440257).

Almost surely, 2^73743073 is an apocalyptic number.

It is an amenable number.

73743073 is a deficient number, since it is larger than the sum of its proper divisors (17955).

73743073 is a wasteful number, since it uses less digits than its factorization.

73743073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17954.

The product of its (nonzero) digits is 37044, while the sum is 34.

The square root of 73743073 is about 8587.3787036557. The cubic root of 73743073 is about 419.3471963832.

The spelling of 73743073 in words is "seventy-three million, seven hundred forty-three thousand, seventy-three".