6382640 has 40 divisors (see below), whose sum is σ = 16190928. Its totient is φ = 2320640.

The previous prime is 6382637. The next prime is 6382643. The reversal of 6382640 is 462836.

It is an interprime number because it is at equal distance from previous prime (6382637) and next prime (6382643).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6382643) 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, 2747 + ... + 4506.

Almost surely, 2^6382640 is an apocalyptic number.

It is an amenable number.

6382640 is an abundant number, since it is smaller than the sum of its proper divisors (9808288).

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

6382640 is a wasteful number, since it uses less digits than its factorization.

6382640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7277 (or 7271 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 6382640 is about 2526.3887270173. The cubic root of 6382640 is about 185.4955305360.

The spelling of 6382640 in words is "six million, three hundred eighty-two thousand, six hundred forty".