1166920 has 16 divisors (see below), whose sum is σ = 2625660. Its totient is φ = 466752.

The previous prime is 1166903. The next prime is 1166927. The reversal of 1166920 is 296611.

It can be written as a sum of positive squares in 2 ways, for example, as 1052676 + 114244 = 1026^2 + 338^2 .

It is not an unprimeable number, because it can be changed into a prime (1166927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14547 + ... + 14626.

2^1166920 is an apocalyptic number.

1166920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166920 is an abundant number, since it is smaller than the sum of its proper divisors (1458740).

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

1166920 is a wasteful number, since it uses less digits than its factorization.

1166920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29184 (or 29180 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1166920 is about 1080.2407139152. The cubic root of 1166920 is about 105.2802791449.

The spelling of 1166920 in words is "one million, one hundred sixty-six thousand, nine hundred twenty".