20623927 has 2 divisors, whose sum is σ = 20623928. Its totient is φ = 20623926.

The previous prime is 20623921. The next prime is 20623931. The reversal of 20623927 is 72932602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20623927 - 2³ = 20623919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20623921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10311963 + 10311964.

It is an arithmetic number, because the mean of its divisors is an integer number (10311964).

Almost surely, 2^20623927 is an apocalyptic number.

20623927 is a deficient number, since it is larger than the sum of its proper divisors (1).

20623927 is an equidigital number, since it uses as much as digits as its factorization.

20623927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20623927 is about 4541.3573961977. The cubic root of 20623927 is about 274.2355718241.

The spelling of 20623927 in words is "twenty million, six hundred twenty-three thousand, nine hundred twenty-seven".