672997944 has 64 divisors (see below), whose sum is σ = 1731824640. Its totient is φ = 217808640.

The previous prime is 672997943. The next prime is 672997967. The reversal of 672997944 is 449799276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672997943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217899 + ... + 220965.

It is an arithmetic number, because the mean of its divisors is an integer number (27059760).

Almost surely, 2^672997944 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 672997944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865912320).

672997944 is an abundant number, since it is smaller than the sum of its proper divisors (1058826696).

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

672997944 is a wasteful number, since it uses less digits than its factorization.

672997944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340 (or 3336 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 57.

The square root of 672997944 is about 25942.2039156275. The cubic root of 672997944 is about 876.3371963481.

The spelling of 672997944 in words is "six hundred seventy-two million, nine hundred ninety-seven thousand, nine hundred forty-four".