20664303 has 8 divisors (see below), whose sum is σ = 30057216. Its totient is φ = 12523800.

The previous prime is 20664289. The next prime is 20664313. The reversal of 20664303 is 30346602.

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

It is not a de Polignac number, because 20664303 - 2⁶ = 20664239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20664313) 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, 313063 + ... + 313128.

It is an arithmetic number, because the mean of its divisors is an integer number (3757152).

Almost surely, 2^20664303 is an apocalyptic number.

20664303 is a deficient number, since it is larger than the sum of its proper divisors (9392913).

20664303 is a wasteful number, since it uses less digits than its factorization.

20664303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626205.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 20664303 is about 4545.8005895552. The cubic root of 20664303 is about 274.4144145445.

The spelling of 20664303 in words is "twenty million, six hundred sixty-four thousand, three hundred three".