673399940 has 12 divisors (see below), whose sum is σ = 1414139916. Its totient is φ = 269359968.

The previous prime is 673399933. The next prime is 673400023. The reversal of 673399940 is 49993376.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 403849216 + 269550724 = 20096^2 + 16418^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16834979 + ... + 16835018.

It is an arithmetic number, because the mean of its divisors is an integer number (117844993).

Almost surely, 2^673399940 is an apocalyptic number.

It is an amenable number.

673399940 is an abundant number, since it is smaller than the sum of its proper divisors (740739976).

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

673399940 is a wasteful number, since it uses less digits than its factorization.

673399940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33670006 (or 33670004 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 50.

The square root of 673399940 is about 25949.9506743269. The cubic root of 673399940 is about 876.5116465733.

The spelling of 673399940 in words is "six hundred seventy-three million, three hundred ninety-nine thousand, nine hundred forty".