7666622222 has 24 divisors (see below), whose sum is σ = 13739033304. Its totient is φ = 3196891152.

The previous prime is 7666622221. The next prime is 7666622239. The reversal of 7666622222 is 2222266667.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7666622222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666622221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1053548 + ... + 1060799.

It is an arithmetic number, because the mean of its divisors is an integer number (572459721).

Almost surely, 2^7666622222 is an apocalyptic number.

7666622222 is a deficient number, since it is larger than the sum of its proper divisors (6072411082).

7666622222 is a wasteful number, since it uses less digits than its factorization.

7666622222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114400 (or 2114393 counting only the distinct ones).

The product of its digits is 290304, while the sum is 41.

The square root of 7666622222 is about 87559.2497797920. The cubic root of 7666622222 is about 1971.8234229130.

Adding to 7666622222 its reverse (2222266667), we get a palindrome (9888888889).

The spelling of 7666622222 in words is "seven billion, six hundred sixty-six million, six hundred twenty-two thousand, two hundred twenty-two".