1166788 has 18 divisors (see below), whose sum is σ = 2375646. Its totient is φ = 499968.

The previous prime is 1166779. The next prime is 1166801. The reversal of 1166788 is 8876611.

It can be written as a sum of positive squares in only one way, i.e., 636804 + 529984 = 798^2 + 728^2 .

It is a super-2 number, since 2×1166788² = 2722788473888, which contains 22 as substring.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2781 + ... + 3172.

2^1166788 is an apocalyptic number.

It is an amenable number.

1166788 is an abundant number, since it is smaller than the sum of its proper divisors (1208858).

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

1166788 is a wasteful number, since it uses less digits than its factorization.

1166788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5971 (or 5962 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 1166788 is about 1080.1796146938. The cubic root of 1166788 is about 105.2763092866.

The spelling of 1166788 in words is "one million, one hundred sixty-six thousand, seven hundred eighty-eight".