20662927 has 4 divisors (see below), whose sum is σ = 20794696. Its totient is φ = 20531160.

The previous prime is 20662903. The next prime is 20662931. The reversal of 20662927 is 72926602.

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 20662927 - 2¹¹ = 20660879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20662892 and 20662901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20662127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65649 + ... + 65962.

It is an arithmetic number, because the mean of its divisors is an integer number (5198674).

Almost surely, 2^20662927 is an apocalyptic number.

20662927 is a deficient number, since it is larger than the sum of its proper divisors (131769).

20662927 is a wasteful number, since it uses less digits than its factorization.

20662927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131768.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20662927 is about 4545.6492385577. The cubic root of 20662927 is about 274.4083234831.

The spelling of 20662927 in words is "twenty million, six hundred sixty-two thousand, nine hundred twenty-seven".