73489673 has 4 divisors (see below), whose sum is σ = 73570560. Its totient is φ = 73408788.

The previous prime is 73489651. The next prime is 73489681. The reversal of 73489673 is 37698437.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73489673 - 2⁶ = 73489609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73429673) 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 in 3 ways as a sum of consecutive naturals, for example, 39065 + ... + 40902.

It is an arithmetic number, because the mean of its divisors is an integer number (18392640).

Almost surely, 2^73489673 is an apocalyptic number.

It is an amenable number.

73489673 is a deficient number, since it is larger than the sum of its proper divisors (80887).

73489673 is an equidigital number, since it uses as much as digits as its factorization.

73489673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80886.

The product of its digits is 762048, while the sum is 47.

The square root of 73489673 is about 8572.6117957131. The cubic root of 73489673 is about 418.8663171935.

Subtracting from 73489673 its sum of digits (47), we obtain a triangular number (73489626 = T₁₂₁₂₃).

The spelling of 73489673 in words is "seventy-three million, four hundred eighty-nine thousand, six hundred seventy-three".