1166671 has 8 divisors (see below), whose sum is σ = 1292544. Its totient is φ = 1044120.

The previous prime is 1166663. The next prime is 1166677. The reversal of 1166671 is 1766611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166671 - 2³ = 1166663 is a prime.

It is a super-2 number, since 2×1166671² = 2722242444482, which contains 22 as substring.

1166671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 1528.

It is an arithmetic number, because the mean of its divisors is an integer number (161568).

2^1166671 is an apocalyptic number.

1166671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166671 is a deficient number, since it is larger than the sum of its proper divisors (125873).

1166671 is a wasteful number, since it uses less digits than its factorization.

1166671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661.

The product of its digits is 1512, while the sum is 28.

The square root of 1166671 is about 1080.1254556763. The cubic root of 1166671 is about 105.2727902984.

The spelling of 1166671 in words is "one million, one hundred sixty-six thousand, six hundred seventy-one".