1866722 has 32 divisors (see below), whose sum is σ = 3374784. Its totient is φ = 763200.

The previous prime is 1866721. The next prime is 1866737. The reversal of 1866722 is 2276681.

It is not an unprimeable number, because it can be changed into a prime (1866721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17393 + ... + 17499.

It is an arithmetic number, because the mean of its divisors is an integer number (105462).

2^1866722 is an apocalyptic number.

1866722 is a deficient number, since it is larger than the sum of its proper divisors (1508062).

1866722 is a wasteful number, since it uses less digits than its factorization.

1866722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194.

The product of its digits is 8064, while the sum is 32.

The square root of 1866722 is about 1366.2803519044. The cubic root of 1866722 is about 123.1288666363.

The spelling of 1866722 in words is "one million, eight hundred sixty-six thousand, seven hundred twenty-two".