1768223666 has 32 divisors (see below), whose sum is σ = 2977051968. Its totient is φ = 780848640.

The previous prime is 1768223651. The next prime is 1768223711. The reversal of 1768223666 is 6663228671.

It is a super-2 number, since 2×1768223666² = 6253229866004959112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1768223666.

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, 99386 + ... + 115818.

It is an arithmetic number, because the mean of its divisors is an integer number (93032874).

Almost surely, 2^1768223666 is an apocalyptic number.

1768223666 is a deficient number, since it is larger than the sum of its proper divisors (1208828302).

1768223666 is a wasteful number, since it uses less digits than its factorization.

1768223666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16586.

The product of its digits is 870912, while the sum is 47.

The square root of 1768223666 is about 42050.2516758223. The cubic root of 1768223666 is about 1209.2397077017.

The spelling of 1768223666 in words is "one billion, seven hundred sixty-eight million, two hundred twenty-three thousand, six hundred sixty-six".