2133705 has 24 divisors (see below), whose sum is σ = 3972672. Its totient is φ = 975072.

The previous prime is 2133701. The next prime is 2133713. The reversal of 2133705 is 5073312.

It is a happy number.

It is not a de Polignac number, because 2133705 - 2² = 2133701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2133701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 717 + ... + 2186.

It is an arithmetic number, because the mean of its divisors is an integer number (165528).

2^2133705 is an apocalyptic number.

It is an amenable number.

2133705 is a deficient number, since it is larger than the sum of its proper divisors (1838967).

2133705 is a wasteful number, since it uses less digits than its factorization.

2133705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925 (or 2918 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 2133705 is about 1460.7207125252. The cubic root of 2133705 is about 128.7393933513.

The spelling of 2133705 in words is "two million, one hundred thirty-three thousand, seven hundred five".