2190706 has 16 divisors (see below), whose sum is σ = 3782016. Its totient is φ = 932256.

The previous prime is 2190691. The next prime is 2190737. The reversal of 2190706 is 6070912.

2190706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1870 + ... + 2806.

It is an arithmetic number, because the mean of its divisors is an integer number (236376).

2^2190706 is an apocalyptic number.

2190706 is a deficient number, since it is larger than the sum of its proper divisors (1591310).

2190706 is a wasteful number, since it uses less digits than its factorization.

2190706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2190706 is about 1480.1033747681. The cubic root of 2190706 is about 129.8757392511.

The spelling of 2190706 in words is "two million, one hundred ninety thousand, seven hundred six".