20963006 has 16 divisors (see below), whose sum is σ = 34369920. Its totient is φ = 9546240.

The previous prime is 20962999. The next prime is 20963011. The reversal of 20963006 is 60036902.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8891 + ... + 10998.

It is an arithmetic number, because the mean of its divisors is an integer number (2148120).

Almost surely, 2^20963006 is an apocalyptic number.

20963006 is a deficient number, since it is larger than the sum of its proper divisors (13406914).

20963006 is a wasteful number, since it uses less digits than its factorization.

20963006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 20963006 is about 4578.5375394333. The cubic root of 20963006 is about 275.7303166347.

Adding to 20963006 its reverse (60036902), we get a palindrome (80999908).

The spelling of 20963006 in words is "twenty million, nine hundred sixty-three thousand, six".