1166564 has 24 divisors (see below), whose sum is σ = 2374848. Its totient is φ = 491040.

The previous prime is 1166563. The next prime is 1166567. The reversal of 1166564 is 4656611.

It is not an unprimeable number, because it can be changed into a prime (1166563) 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, 1367 + ... + 2049.

It is an arithmetic number, because the mean of its divisors is an integer number (98952).

2^1166564 is an apocalyptic number.

1166564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1166564 is an abundant number, since it is smaller than the sum of its proper divisors (1208284).

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

1166564 is a wasteful number, since it uses less digits than its factorization.

1166564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 753 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 1166564 is about 1080.0759232572. The cubic root of 1166564 is about 105.2695718723.

The spelling of 1166564 in words is "one million, one hundred sixty-six thousand, five hundred sixty-four".