672323712 has 64 divisors (see below), whose sum is σ = 1791201600. Its totient is φ = 223437824.

The previous prime is 672323677. The next prime is 672323719. The reversal of 672323712 is 217323276.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (672323719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135418 + ... + 140294.

It is an arithmetic number, because the mean of its divisors is an integer number (27987525).

Almost surely, 2^672323712 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 672323712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895600800).

672323712 is an abundant number, since it is smaller than the sum of its proper divisors (1118877888).

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

672323712 is a wasteful number, since it uses less digits than its factorization.

672323712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253 (or 5241 counting only the distinct ones).

The product of its digits is 21168, while the sum is 33.

The square root of 672323712 is about 25929.2057726418. The cubic root of 672323712 is about 876.0444505290.

Adding to 672323712 its reverse (217323276), we get a palindrome (889646988).

The spelling of 672323712 in words is "six hundred seventy-two million, three hundred twenty-three thousand, seven hundred twelve".