1117777666 has 16 divisors (see below), whose sum is σ = 1687392000. Its totient is φ = 555324448.

The previous prime is 1117777631. The next prime is 1117777681. The reversal of 1117777666 is 6667777111.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238110 + ... + 242758.

It is an arithmetic number, because the mean of its divisors is an integer number (105462000).

Almost surely, 2^1117777666 is an apocalyptic number.

1117777666 is a deficient number, since it is larger than the sum of its proper divisors (569614334).

1117777666 is a wasteful number, since it uses less digits than its factorization.

1117777666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5393.

The product of its digits is 518616, while the sum is 49.

The square root of 1117777666 is about 33433.1821099937. The cubic root of 1117777666 is about 1037.8114931731.

It can be divided in two parts, 111 and 7777666, that added together give a palindrome (7777777).

The spelling of 1117777666 in words is "one billion, one hundred seventeen million, seven hundred seventy-seven thousand, six hundred sixty-six".