6293640 has 64 divisors (see below), whose sum is σ = 19051200. Its totient is φ = 1663232.

The previous prime is 6293603. The next prime is 6293647. The reversal of 6293640 is 463926.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6293598 and 6293607.

It is not an unprimeable number, because it can be changed into a prime (6293647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21334 + ... + 21626.

It is an arithmetic number, because the mean of its divisors is an integer number (297675).

Almost surely, 2^6293640 is an apocalyptic number.

6293640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6293640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9525600).

6293640 is an abundant number, since it is smaller than the sum of its proper divisors (12757560).

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

6293640 is a wasteful number, since it uses less digits than its factorization.

6293640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 6293640 is about 2508.7128173627. The cubic root of 6293640 is about 184.6293039719.

The spelling of 6293640 in words is "six million, two hundred ninety-three thousand, six hundred forty".