6223640 has 48 divisors (see below), whose sum is σ = 14813280. Its totient is φ = 2352960.

The previous prime is 6223627. The next prime is 6223667. The reversal of 6223640 is 463226.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14225 + ... + 14655.

It is an arithmetic number, because the mean of its divisors is an integer number (308610).

Almost surely, 2^6223640 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 6223640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7406640).

6223640 is an abundant number, since it is smaller than the sum of its proper divisors (8589640).

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

6223640 is a wasteful number, since it uses less digits than its factorization.

6223640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6223640 is about 2494.7224294498. The cubic root of 6223640 is about 183.9422471552.

Adding to 6223640 its reverse (463226), we get a palindrome (6686866).

The spelling of 6223640 in words is "six million, two hundred twenty-three thousand, six hundred forty".