20066722 has 12 divisors (see below), whose sum is σ = 32594130. Its totient is φ = 9261408.

The previous prime is 20066719. The next prime is 20066723. The reversal of 20066722 is 22766002.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4456321 + 15610401 = 2111^2 + 3951^2 .

It is not an unprimeable number, because it can be changed into a prime (20066723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29347 + ... + 30022.

Almost surely, 2^20066722 is an apocalyptic number.

20066722 is a deficient number, since it is larger than the sum of its proper divisors (12527408).

20066722 is a wasteful number, since it uses less digits than its factorization.

20066722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59397 (or 59384 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20066722 is about 4479.5894901207. The cubic root of 20066722 is about 271.7432788975.

The spelling of 20066722 in words is "twenty million, sixty-six thousand, seven hundred twenty-two".