603994040 has 128 divisors (see below), whose sum is σ = 1557057600. Its totient is φ = 209018880.

The previous prime is 603994019. The next prime is 603994057. The reversal of 603994040 is 40499306.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1116170 + ... + 1116710.

Almost surely, 2^603994040 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 603994040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778528800).

603994040 is an abundant number, since it is smaller than the sum of its proper divisors (953063560).

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

603994040 is a wasteful number, since it uses less digits than its factorization.

603994040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 603994040 is about 24576.2902001095. The cubic root of 603994040 is about 845.3000300070.

The spelling of 603994040 in words is "six hundred three million, nine hundred ninety-four thousand, forty".