6221707156 has 48 divisors (see below), whose sum is σ = 12789536256. Its totient is φ = 2593004544.

The previous prime is 6221707147. The next prime is 6221707189. The reversal of 6221707156 is 6517071226.

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, 191556 + ... + 221668.

It is an arithmetic number, because the mean of its divisors is an integer number (266448672).

Almost surely, 2^6221707156 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 6221707156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6394768128).

6221707156 is an abundant number, since it is smaller than the sum of its proper divisors (6567829100).

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

6221707156 is a wasteful number, since it uses less digits than its factorization.

6221707156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30328 (or 30326 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 6221707156 is about 78877.7988790255. The cubic root of 6221707156 is about 1839.2320318303.

The spelling of 6221707156 in words is "six billion, two hundred twenty-one million, seven hundred seven thousand, one hundred fifty-six".