20662363 has 4 divisors (see below), whose sum is σ = 20679480. Its totient is φ = 20645248.

The previous prime is 20662357. The next prime is 20662381. The reversal of 20662363 is 36326602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20662363 - 2¹³ = 20654171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20662333) 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 3 ways as a sum of consecutive naturals, for example, 6598 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (5169870).

Almost surely, 2^20662363 is an apocalyptic number.

20662363 is a deficient number, since it is larger than the sum of its proper divisors (17117).

20662363 is a wasteful number, since it uses less digits than its factorization.

20662363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17116.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 20662363 is about 4545.5872007916. The cubic root of 20662363 is about 274.4058267780.

Adding to 20662363 its reverse (36326602), we get a palindrome (56988965).

It can be divided in two parts, 20662 and 363, that added together give a square (21025 = 145²).

The spelling of 20662363 in words is "twenty million, six hundred sixty-two thousand, three hundred sixty-three".