6573940 has 24 divisors (see below), whose sum is σ = 14143752. Its totient is φ = 2565120.

The previous prime is 6573913. The next prime is 6573949. The reversal of 6573940 is 493756.

6573940 = 655² + 656² + ... + 669².

It can be written as a sum of positive squares in 4 ways, for example, as 40804 + 6533136 = 202^2 + 2556^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6573896 and 6573905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6573949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3189 + ... + 4828.

It is an arithmetic number, because the mean of its divisors is an integer number (589323).

Almost surely, 2^6573940 is an apocalyptic number.

It is an amenable number.

6573940 is an abundant number, since it is smaller than the sum of its proper divisors (7569812).

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

6573940 is a wasteful number, since it uses less digits than its factorization.

6573940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067 (or 8065 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 6573940 is about 2563.9695786027. The cubic root of 6573940 is about 187.3305372559.

The spelling of 6573940 in words is "six million, five hundred seventy-three thousand, nine hundred forty".