20663076 has 24 divisors (see below), whose sum is σ = 55101760. Its totient is φ = 5903712.

The previous prime is 20663053. The next prime is 20663087. The reversal of 20663076 is 67036602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122911 + ... + 123078.

Almost surely, 2^20663076 is an apocalyptic number.

It is an amenable number.

20663076 is an abundant number, since it is smaller than the sum of its proper divisors (34438684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20663076 is a wasteful number, since it uses less digits than its factorization.

20663076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246003 (or 246001 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 20663076 is about 4545.6656278261. The cubic root of 20663076 is about 274.4089830660.

Adding to 20663076 its reverse (67036602), we get a palindrome (87699678).

The spelling of 20663076 in words is "twenty million, six hundred sixty-three thousand, seventy-six".