1166659664 has 10 divisors (see below), whose sum is σ = 2260403130. Its totient is φ = 583329824.

The previous prime is 1166659661. The next prime is 1166659693. The reversal of 1166659664 is 4669566611.

It can be written as a sum of positive squares in only one way, i.e., 701826064 + 464833600 = 26492^2 + 21560^2 .

It is a super-2 number, since 2×1166659664² = 2722189543209185792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166659661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36458099 + ... + 36458130.

It is an arithmetic number, because the mean of its divisors is an integer number (226040313).

Almost surely, 2^1166659664 is an apocalyptic number.

It is an amenable number.

1166659664 is a deficient number, since it is larger than the sum of its proper divisors (1093743466).

1166659664 is an equidigital number, since it uses as much as digits as its factorization.

1166659664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72916237 (or 72916231 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 50.

The square root of 1166659664 is about 34156.4000445012. The cubic root of 1166659664 is about 1052.7244933499.

The spelling of 1166659664 in words is "one billion, one hundred sixty-six million, six hundred fifty-nine thousand, six hundred sixty-four".