2149706 has 16 divisors (see below), whose sum is σ = 3515400. Its totient is φ = 979968.

The previous prime is 2149703. The next prime is 2149711. The reversal of 2149706 is 6079412.

It can be written as a sum of positive squares in 4 ways, for example, as 483025 + 1666681 = 695^2 + 1291^2 .

It is not an unprimeable number, because it can be changed into a prime (2149703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850 + ... + 2778.

2^2149706 is an apocalyptic number.

2149706 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2149706 is a deficient number, since it is larger than the sum of its proper divisors (1365694).

2149706 is a wasteful number, since it uses less digits than its factorization.

2149706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2149706 is about 1466.1875732661. The cubic root of 2149706 is about 129.0604047777.

The spelling of 2149706 in words is "two million, one hundred forty-nine thousand, seven hundred six".