673449744 has 80 divisors (see below), whose sum is σ = 1901306880. Its totient is φ = 203710080.

The previous prime is 673449743. The next prime is 673449787. The reversal of 673449744 is 447944376.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 673449693 and 673449702.

It is not an unprimeable number, because it can be changed into a prime (673449743) 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, 509917 + ... + 511235.

It is an arithmetic number, because the mean of its divisors is an integer number (23766336).

Almost surely, 2^673449744 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 673449744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950653440).

673449744 is an abundant number, since it is smaller than the sum of its proper divisors (1227857136).

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

673449744 is a wasteful number, since it uses less digits than its factorization.

673449744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 2302 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 48.

The square root of 673449744 is about 25950.9102730521. The cubic root of 673449744 is about 876.5332546882.

The spelling of 673449744 in words is "six hundred seventy-three million, four hundred forty-nine thousand, seven hundred forty-four".