1116578664 has 48 divisors (see below), whose sum is σ = 3039456420. Its totient is φ = 370298880.

The previous prime is 1116578657. The next prime is 1116578689. The reversal of 1116578664 is 4668756111.

1116578664 is a `hidden beast` number, since 1 + 1 + 16 + 578 + 6 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 971568900 + 145009764 = 31170^2 + 12042^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25177 + ... + 53544.

Almost surely, 2^1116578664 is an apocalyptic number.

It is an amenable number.

1116578664 is an abundant number, since it is smaller than the sum of its proper divisors (1922877756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1116578664 is a wasteful number, since it uses less digits than its factorization.

1116578664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78930 (or 78923 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1116578664 is about 33415.2459814379. The cubic root of 1116578664 is about 1037.4402854101.

The spelling of 1116578664 in words is "one billion, one hundred sixteen million, five hundred seventy-eight thousand, six hundred sixty-four".