7221950766 has 64 divisors (see below), whose sum is σ = 16553989440. Its totient is φ = 2361820032.

The previous prime is 7221950737. The next prime is 7221950767. The reversal of 7221950766 is 6670591227.

7221950766 is a `hidden beast` number, since 72 + 2 + 19 + 507 + 66 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221950767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216246 + ... + 247398.

It is an arithmetic number, because the mean of its divisors is an integer number (258656085).

Almost surely, 2^7221950766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7221950766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8276994720).

7221950766 is an abundant number, since it is smaller than the sum of its proper divisors (9332038674).

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

7221950766 is an equidigital number, since it uses as much as digits as its factorization.

7221950766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31229 (or 31211 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 7221950766 is about 84982.0614365173. The cubic root of 7221950766 is about 1932.9391146344.

The spelling of 7221950766 in words is "seven billion, two hundred twenty-one million, nine hundred fifty thousand, seven hundred sixty-six".