1116666779 has 8 divisors (see below), whose sum is σ = 1192437120. Its totient is φ = 1043380800.

The previous prime is 1116666773. The next prime is 1116666781. The reversal of 1116666779 is 9776666111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1116666779 - 2¹² = 1116662683 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1116666773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620162 + ... + 621959.

It is an arithmetic number, because the mean of its divisors is an integer number (149054640).

Almost surely, 2^1116666779 is an apocalyptic number.

1116666779 is a deficient number, since it is larger than the sum of its proper divisors (75770341).

1116666779 is a wasteful number, since it uses less digits than its factorization.

1116666779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242181.

The product of its digits is 571536, while the sum is 50.

The square root of 1116666779 is about 33416.5644404089. The cubic root of 1116666779 is about 1037.4675746193.

The spelling of 1116666779 in words is "one billion, one hundred sixteen million, six hundred sixty-six thousand, seven hundred seventy-nine".