6597640 has 32 divisors (see below), whose sum is σ = 16966080. Its totient is φ = 2261952.

The previous prime is 6597629. The next prime is 6597641. The reversal of 6597640 is 467956.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6597640.

It is not an unprimeable number, because it can be changed into a prime (6597641) 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, 11502 + ... + 12061.

It is an arithmetic number, because the mean of its divisors is an integer number (530190).

Almost surely, 2^6597640 is an apocalyptic number.

It is an amenable number.

6597640 is an abundant number, since it is smaller than the sum of its proper divisors (10368440).

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

6597640 is a wasteful number, since it uses less digits than its factorization.

6597640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23581 (or 23577 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6597640 is about 2568.5871602887. The cubic root of 6597640 is about 187.5553851198. Note that the first 3 decimals are identical.

The spelling of 6597640 in words is "six million, five hundred ninety-seven thousand, six hundred forty".