20650996 has 6 divisors (see below), whose sum is σ = 36139250. Its totient is φ = 10325496.

The previous prime is 20650979. The next prime is 20650997. The reversal of 20650996 is 69905602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17808400 + 2842596 = 4220^2 + 1686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2581371 + ... + 2581378.

Almost surely, 2^20650996 is an apocalyptic number.

It is an amenable number.

20650996 is a deficient number, since it is larger than the sum of its proper divisors (15488254).

20650996 is a wasteful number, since it uses less digits than its factorization.

20650996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5162753 (or 5162751 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 20650996 is about 4544.3366952725. The cubic root of 20650996 is about 274.3554978589.

The spelling of 20650996 in words is "twenty million, six hundred fifty thousand, nine hundred ninety-six".