673670440 has 16 divisors (see below), whose sum is σ = 1515758580. Its totient is φ = 269468160.

The previous prime is 673670429. The next prime is 673670443. The reversal of 673670440 is 44076376.

It can be written as a sum of positive squares in 2 ways, for example, as 654643396 + 19027044 = 25586^2 + 4362^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 673670440.

It is not an unprimeable number, because it can be changed into a prime (673670443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8420841 + ... + 8420920.

Almost surely, 2^673670440 is an apocalyptic number.

It is an amenable number.

673670440 is an abundant number, since it is smaller than the sum of its proper divisors (842088140).

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

673670440 is a wasteful number, since it uses less digits than its factorization.

673670440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16841772 (or 16841768 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 673670440 is about 25955.1621069875. The cubic root of 673670440 is about 876.6289937082.

The spelling of 673670440 in words is "six hundred seventy-three million, six hundred seventy thousand, four hundred forty".