1166646 has 16 divisors (see below), whose sum is σ = 2512944. Its totient is φ = 358944.

The previous prime is 1166639. The next prime is 1166663. The reversal of 1166646 is 6466611.

It is a super-2 number, since 2×1166646² = 2722125778632, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7401 + ... + 7556.

It is an arithmetic number, because the mean of its divisors is an integer number (157059).

2^1166646 is an apocalyptic number.

1166646 is an abundant number, since it is smaller than the sum of its proper divisors (1346298).

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

1166646 is a wasteful number, since it uses less digits than its factorization.

1166646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14975.

The product of its digits is 5184, while the sum is 30.

The square root of 1166646 is about 1080.1138828846. The cubic root of 1166646 is about 105.2720383473.

The spelling of 1166646 in words is "one million, one hundred sixty-six thousand, six hundred forty-six".