1117642666 has 24 divisors (see below), whose sum is σ = 1977651936. Its totient is φ = 472240440.

The previous prime is 1117642663. The next prime is 1117642693. The reversal of 1117642666 is 6662467111.

It is not an unprimeable number, because it can be changed into a prime (1117642663) 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, 73356 + ... + 87271.

It is an arithmetic number, because the mean of its divisors is an integer number (82402164).

Almost surely, 2^1117642666 is an apocalyptic number.

1117642666 is a deficient number, since it is larger than the sum of its proper divisors (860009270).

1117642666 is a wasteful number, since it uses less digits than its factorization.

1117642666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160714 (or 160707 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 1117642666 is about 33431.1630967276. The cubic root of 1117642666 is about 1037.7697108054.

The spelling of 1117642666 in words is "one billion, one hundred seventeen million, six hundred forty-two thousand, six hundred sixty-six".