673745296 has 80 divisors (see below), whose sum is σ = 1531152000. Its totient is φ = 287075712.

The previous prime is 673745273. The next prime is 673745297. The reversal of 673745296 is 692547376.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (673745297) 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, 1607775 + ... + 1608193.

It is an arithmetic number, because the mean of its divisors is an integer number (19139400).

Almost surely, 2^673745296 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 673745296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765576000).

673745296 is an abundant number, since it is smaller than the sum of its proper divisors (857406704).

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

673745296 is a wasteful number, since it uses less digits than its factorization.

673745296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 721 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 49.

The square root of 673745296 is about 25956.6040922151. The cubic root of 673745296 is about 876.6614618636.

It can be divided in two parts, 673745 and 296, that added together give a square (674041 = 821²).

The spelling of 673745296 in words is "six hundred seventy-three million, seven hundred forty-five thousand, two hundred ninety-six".