1166064657 has 16 divisors (see below), whose sum is σ = 1598024640. Its totient is φ = 755773632.

The previous prime is 1166064623. The next prime is 1166064671. The reversal of 1166064657 is 7564606611.

It is a happy number.

It is not a de Polignac number, because 1166064657 - 2³⁰ = 92322833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166064617) 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 in 15 ways as a sum of consecutive naturals, for example, 171943 + ... + 178595.

It is an arithmetic number, because the mean of its divisors is an integer number (99876540).

Almost surely, 2^1166064657 is an apocalyptic number.

It is an amenable number.

1166064657 is a deficient number, since it is larger than the sum of its proper divisors (431959983).

1166064657 is a wasteful number, since it uses less digits than its factorization.

1166064657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1166064657 is about 34147.6888969078. The cubic root of 1166064657 is about 1052.5454965729.

The spelling of 1166064657 in words is "one billion, one hundred sixty-six million, sixty-four thousand, six hundred fifty-seven".