673576509 has 16 divisors (see below), whose sum is σ = 921729600. Its totient is φ = 437377536.

The previous prime is 673576489. The next prime is 673576513. The reversal of 673576509 is 905675376.

It is a happy number.

It is not a de Polignac number, because 673576509 - 2¹² = 673572413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673576549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1837 + ... + 36749.

It is an arithmetic number, because the mean of its divisors is an integer number (57608100).

Almost surely, 2^673576509 is an apocalyptic number.

It is an amenable number.

673576509 is a deficient number, since it is larger than the sum of its proper divisors (248153091).

673576509 is a wasteful number, since it uses less digits than its factorization.

673576509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35084.

The product of its (nonzero) digits is 1190700, while the sum is 48.

The square root of 673576509 is about 25953.3525580030. The cubic root of 673576509 is about 876.5882485305.

The spelling of 673576509 in words is "six hundred seventy-three million, five hundred seventy-six thousand, five hundred nine".