2166733 has 4 divisors (see below), whose sum is σ = 2194240. Its totient is φ = 2139228.

The previous prime is 2166721. The next prime is 2166763. The reversal of 2166733 is 3376612.

2166733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2166733 - 2⁹ = 2166221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13635 + ... + 13792.

It is an arithmetic number, because the mean of its divisors is an integer number (548560).

2^2166733 is an apocalyptic number.

It is an amenable number.

2166733 is a deficient number, since it is larger than the sum of its proper divisors (27507).

2166733 is an equidigital number, since it uses as much as digits as its factorization.

2166733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27506.

The product of its digits is 4536, while the sum is 28.

The square root of 2166733 is about 1471.9826765285. The cubic root of 2166733 is about 129.4002551302.

The spelling of 2166733 in words is "two million, one hundred sixty-six thousand, seven hundred thirty-three".