673724440 has 16 divisors (see below), whose sum is σ = 1515880080. Its totient is φ = 269489760.

The previous prime is 673724431. The next prime is 673724449. The reversal of 673724440 is 44427376.

It is an interprime number because it is at equal distance from previous prime (673724431) and next prime (673724449).

It is a self number, because there is not a number n which added to its sum of digits gives 673724440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673724449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8421516 + ... + 8421595.

It is an arithmetic number, because the mean of its divisors is an integer number (94742505).

Almost surely, 2^673724440 is an apocalyptic number.

It is an amenable number.

673724440 is an abundant number, since it is smaller than the sum of its proper divisors (842155640).

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

673724440 is a wasteful number, since it uses less digits than its factorization.

673724440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16843122 (or 16843118 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 37.

The square root of 673724440 is about 25956.2023416370. The cubic root of 673724440 is about 876.6524159921.

The spelling of 673724440 in words is "six hundred seventy-three million, seven hundred twenty-four thousand, four hundred forty".