6221407956 has 24 divisors (see below), whose sum is σ = 15280651680. Its totient is φ = 1964655072.

The previous prime is 6221407939. The next prime is 6221407963. The reversal of 6221407956 is 6597041226.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 13643211 + ... + 13643666.

It is an arithmetic number, because the mean of its divisors is an integer number (636693820).

Almost surely, 2^6221407956 is an apocalyptic number.

It is an amenable number.

6221407956 is an abundant number, since it is smaller than the sum of its proper divisors (9059243724).

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

6221407956 is a wasteful number, since it uses less digits than its factorization.

6221407956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27286903 (or 27286901 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 6221407956 is about 78875.9022515749. The cubic root of 6221407956 is about 1839.2025486552.

The spelling of 6221407956 in words is "six billion, two hundred twenty-one million, four hundred seven thousand, nine hundred fifty-six".