6622749952 has 144 divisors (see below), whose sum is σ = 16833075840. Its totient is φ = 2529386496.

The previous prime is 6622749943. The next prime is 6622749961. The reversal of 6622749952 is 2599472266.

It is an interprime number because it is at equal distance from previous prime (6622749943) and next prime (6622749961).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 6622749952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670683 + ... + 680485.

It is an arithmetic number, because the mean of its divisors is an integer number (116896360).

Almost surely, 2^6622749952 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 6622749952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8416537920).

6622749952 is an abundant number, since it is smaller than the sum of its proper divisors (10210325888).

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

6622749952 is a wasteful number, since it uses less digits than its factorization.

6622749952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868 (or 9854 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The square root of 6622749952 is about 81380.2798717232. The cubic root of 6622749952 is about 1877.9302285505.

The spelling of 6622749952 in words is "six billion, six hundred twenty-two million, seven hundred forty-nine thousand, nine hundred fifty-two".