20760663 has 48 divisors (see below), whose sum is σ = 36180864. Its totient is φ = 10463040.

The previous prime is 20760653. The next prime is 20760667. The reversal of 20760663 is 36606702.

It is not a de Polignac number, because 20760663 - 2¹⁴ = 20744279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20760663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20760667) 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 47 ways as a sum of consecutive naturals, for example, 59656 + ... + 60002.

It is an arithmetic number, because the mean of its divisors is an integer number (753768).

Almost surely, 2^20760663 is an apocalyptic number.

20760663 is a deficient number, since it is larger than the sum of its proper divisors (15420201).

20760663 is a wasteful number, since it uses less digits than its factorization.

20760663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 405 counting only the distinct ones).

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

The square root of 20760663 is about 4556.3870555518. The cubic root of 20760663 is about 274.8402951490.

The spelling of 20760663 in words is "twenty million, seven hundred sixty thousand, six hundred sixty-three".