673894368 has 288 divisors, whose sum is σ = 2324754432. Its totient is φ = 181094400.

The previous prime is 673894343. The next prime is 673894421. The reversal of 673894368 is 863498376.

It is a tau number, because it is divible by the number of its divisors (288).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2562205 + ... + 2562467.

It is an arithmetic number, because the mean of its divisors is an integer number (8072064).

Almost surely, 2^673894368 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 673894368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162377216).

673894368 is an abundant number, since it is smaller than the sum of its proper divisors (1650860064).

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

673894368 is a wasteful number, since it uses less digits than its factorization.

673894368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 347 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 673894368 is about 25959.4754954718. The cubic root of 673894368 is about 876.7261134171.

The spelling of 673894368 in words is "six hundred seventy-three million, eight hundred ninety-four thousand, three hundred sixty-eight".