1166688 has 36 divisors (see below), whose sum is σ = 3318588. Its totient is φ = 388800.

The previous prime is 1166687. The next prime is 1166713. The reversal of 1166688 is 8866611.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1166688² = 2722321778688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1738 + ... + 2313.

It is an arithmetic number, because the mean of its divisors is an integer number (92183).

2^1166688 is an apocalyptic number.

1166688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1166688 is an abundant number, since it is smaller than the sum of its proper divisors (2151900).

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

1166688 is a wasteful number, since it uses less digits than its factorization.

1166688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067 (or 4056 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 1166688 is about 1080.1333251039. The cubic root of 1166688 is about 105.2733016190.

It can be divided in two parts, 1166 and 688, that multiplied together give a palindrome (802208).

The spelling of 1166688 in words is "one million, one hundred sixty-six thousand, six hundred eighty-eight".