673609320 has 48 divisors (see below), whose sum is σ = 2189231460. Its totient is φ = 179629056.

The previous prime is 673609289. The next prime is 673609327. The reversal of 673609320 is 23906376.

It can be written as a sum of positive squares in 2 ways, for example, as 616727556 + 56881764 = 24834^2 + 7542^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (673609327) 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 11 ways as a sum of consecutive naturals, for example, 935209 + ... + 935928.

Almost surely, 2^673609320 is an apocalyptic number.

673609320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

673609320 is an abundant number, since it is smaller than the sum of its proper divisors (1515622140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673609320 is a wasteful number, since it uses less digits than its factorization.

673609320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871154 (or 1871147 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The square root of 673609320 is about 25953.9846651723. The cubic root of 673609320 is about 876.6024816426.

The spelling of 673609320 in words is "six hundred seventy-three million, six hundred nine thousand, three hundred twenty".