1116646564 has 72 divisors (see below), whose sum is σ = 2296315224. Its totient is φ = 473088000.

The previous prime is 1116646561. The next prime is 1116646579. The reversal of 1116646564 is 4656466111.

It can be written as a sum of positive squares in 4 ways, for example, as 27646564 + 1089000000 = 5258^2 + 33000^2 .

It is not an unprimeable number, because it can be changed into a prime (1116646561) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 929164 + ... + 930364.

It is an arithmetic number, because the mean of its divisors is an integer number (31893267).

Almost surely, 2^1116646564 is an apocalyptic number.

It is an amenable number.

1116646564 is an abundant number, since it is smaller than the sum of its proper divisors (1179668660).

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

1116646564 is a wasteful number, since it uses less digits than its factorization.

1116646564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1344 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 1116646564 is about 33416.2619692868. The cubic root of 1116646564 is about 1037.4613141621.

The spelling of 1116646564 in words is "one billion, one hundred sixteen million, six hundred forty-six thousand, five hundred sixty-four".