6294640 has 80 divisors (see below), whose sum is σ = 16713216. Its totient is φ = 2182400.

The previous prime is 6294599. The next prime is 6294649. The reversal of 6294640 is 464926.

It is a tau number, because it is divible by the number of its divisors (80).

It is an Ulam number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6294649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20085 + ... + 20395.

Almost surely, 2^6294640 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 6294640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8356608).

6294640 is an abundant number, since it is smaller than the sum of its proper divisors (10418576).

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

6294640 is a wasteful number, since it uses less digits than its factorization.

6294640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 6294640 is about 2508.9121148418. The cubic root of 6294640 is about 184.6390820720.

The spelling of 6294640 in words is "six million, two hundred ninety-four thousand, six hundred forty".