2905706 has 4 divisors (see below), whose sum is σ = 4358562. Its totient is φ = 1452852.

The previous prime is 2905703. The next prime is 2905739. The reversal of 2905706 is 6075092.

2905706 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.

It can be written as a sum of positive squares in only one way, i.e., 2859481 + 46225 = 1691^2 + 215^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2905703) 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 as a sum of consecutive naturals, namely, 726425 + ... + 726428.

2^2905706 is an apocalyptic number.

2905706 is a deficient number, since it is larger than the sum of its proper divisors (1452856).

2905706 is a wasteful number, since it uses less digits than its factorization.

2905706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452855.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 2905706 is about 1704.6131525950. The cubic root of 2905706 is about 142.6977822001.

The spelling of 2905706 in words is "two million, nine hundred five thousand, seven hundred six".