20650663 has 8 divisors (see below), whose sum is σ = 23713920. Its totient is φ = 17785080.

The previous prime is 20650661. The next prime is 20650667. The reversal of 20650663 is 36605602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20650663 - 2¹ = 20650661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49195 + ... + 49612.

It is an arithmetic number, because the mean of its divisors is an integer number (2964240).

Almost surely, 2^20650663 is an apocalyptic number.

20650663 is a deficient number, since it is larger than the sum of its proper divisors (3063257).

20650663 is a wasteful number, since it uses less digits than its factorization.

20650663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98837.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20650663 is about 4544.3000561143. The cubic root of 20650663 is about 274.3540231782.

The spelling of 20650663 in words is "twenty million, six hundred fifty thousand, six hundred sixty-three".