1166653 has 4 divisors (see below), whose sum is σ = 1171260. Its totient is φ = 1162048.

The previous prime is 1166639. The next prime is 1166663. The reversal of 1166653 is 3566611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3566611 = 67 ⋅53233.

It can be written as a sum of positive squares in 2 ways, for example, as 38809 + 1127844 = 197^2 + 1062^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166653 - 2⁹ = 1166141 is a prime.

It is a super-2 number, since 2×1166653² = 2722158444818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166603) 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, 1900 + ... + 2437.

It is an arithmetic number, because the mean of its divisors is an integer number (292815).

2^1166653 is an apocalyptic number.

It is an amenable number.

1166653 is a deficient number, since it is larger than the sum of its proper divisors (4607).

1166653 is an equidigital number, since it uses as much as digits as its factorization.

1166653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606.

The product of its digits is 3240, while the sum is 28.

The square root of 1166653 is about 1080.1171232788. The cubic root of 1166653 is about 105.2722488947.

The spelling of 1166653 in words is "one million, one hundred sixty-six thousand, six hundred fifty-three".