673844740 has 48 divisors (see below), whose sum is σ = 1456988400. Its totient is φ = 261591552.

The previous prime is 673844729. The next prime is 673844761. The reversal of 673844740 is 47448376.

It can be written as a sum of positive squares in 8 ways, for example, as 214856964 + 458987776 = 14658^2 + 21424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375766 + ... + 377554.

It is an arithmetic number, because the mean of its divisors is an integer number (30353925).

Almost surely, 2^673844740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673844740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728494200).

673844740 is an abundant number, since it is smaller than the sum of its proper divisors (783143660).

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

673844740 is a wasteful number, since it uses less digits than its factorization.

673844740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344 (or 2342 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 43.

The square root of 673844740 is about 25958.5196033980. The cubic root of 673844740 is about 876.7045911362.

The spelling of 673844740 in words is "six hundred seventy-three million, eight hundred forty-four thousand, seven hundred forty".