2005706 has 4 divisors (see below), whose sum is σ = 3008562. Its totient is φ = 1002852.

The previous prime is 2005693. The next prime is 2005723. The reversal of 2005706 is 6075002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6075002 = 2 ⋅3037501.

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 3481 = 1415^2 + 59^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501425 + ... + 501428.

2^2005706 is an apocalyptic number.

2005706 is a deficient number, since it is larger than the sum of its proper divisors (1002856).

2005706 is a wasteful number, since it uses less digits than its factorization.

2005706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002855.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 2005706 is about 1416.2295011756. The cubic root of 2005706 is about 126.1118097142. Note that the first 3 decimals are identical.

The spelling of 2005706 in words is "two million, five thousand, seven hundred six".