672044784 has 80 divisors (see below), whose sum is σ = 1815121920. Its totient is φ = 214007040.

The previous prime is 672044783. The next prime is 672044819. The reversal of 672044784 is 487440276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672044783) 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 15 ways as a sum of consecutive naturals, for example, 114694 + ... + 120410.

It is an arithmetic number, because the mean of its divisors is an integer number (22689024).

Almost surely, 2^672044784 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 672044784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907560960).

672044784 is an abundant number, since it is smaller than the sum of its proper divisors (1143077136).

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

672044784 is a wasteful number, since it uses less digits than its factorization.

672044784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838 (or 5832 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 42.

The square root of 672044784 is about 25923.8265693936. The cubic root of 672044784 is about 875.9232851233.

The spelling of 672044784 in words is "six hundred seventy-two million, forty-four thousand, seven hundred eighty-four".