6622651240 has 64 divisors (see below), whose sum is σ = 15892880400. Its totient is φ = 2474999808.

The previous prime is 6622651237. The next prime is 6622651253. The reversal of 6622651240 is 421562266.

It can be written as a sum of positive squares in 8 ways, for example, as 1703873284 + 4918777956 = 41278^2 + 70134^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 6622651196 and 6622651205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57616 + ... + 128704.

Almost surely, 2^6622651240 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 6622651240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7946440200).

6622651240 is an abundant number, since it is smaller than the sum of its proper divisors (9270229160).

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

6622651240 is a wasteful number, since it uses less digits than its factorization.

6622651240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71254 (or 71250 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 6622651240 is about 81379.6733834684. The cubic root of 6622651240 is about 1877.9208983292.

The spelling of 6622651240 in words is "six billion, six hundred twenty-two million, six hundred fifty-one thousand, two hundred forty".