6336640 has 32 divisors (see below), whose sum is σ = 15150060. Its totient is φ = 2534400.

The previous prime is 6336623. The next prime is 6336641. The reversal of 6336640 is 466336.

It can be written as a sum of positive squares in 2 ways, for example, as 6031936 + 304704 = 2456^2 + 552^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 6336599 and 6336608.

It is not an unprimeable number, because it can be changed into a prime (6336641) 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, 4311 + ... + 5590.

Almost surely, 2^6336640 is an apocalyptic number.

It is an amenable number.

6336640 is an abundant number, since it is smaller than the sum of its proper divisors (8813420).

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

6336640 is an equidigital number, since it uses as much as digits as its factorization.

6336640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920 (or 9908 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 6336640 is about 2517.2683607434. The cubic root of 6336640 is about 185.0488305481.

The spelling of 6336640 in words is "six million, three hundred thirty-six thousand, six hundred forty".