1166651065 has 16 divisors (see below), whose sum is σ = 1421625600. Its totient is φ = 918957312.

The previous prime is 1166651041. The next prime is 1166651099. The reversal of 1166651065 is 5601566611.

It is a cyclic number.

It is not a de Polignac number, because 1166651065 - 2²¹ = 1164553913 is a prime.

It is a super-2 number, since 2×1166651065² = 2722149414931268450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145809 + ... + 153601.

It is an arithmetic number, because the mean of its divisors is an integer number (88851600).

Almost surely, 2^1166651065 is an apocalyptic number.

It is an amenable number.

1166651065 is a deficient number, since it is larger than the sum of its proper divisors (254974535).

1166651065 is an equidigital number, since it uses as much as digits as its factorization.

1166651065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1166651065 is about 34156.2741674205. The cubic root of 1166651065 is about 1052.7219069343.

The spelling of 1166651065 in words is "one billion, one hundred sixty-six million, six hundred fifty-one thousand, sixty-five".