20630147 has 2 divisors, whose sum is σ = 20630148. Its totient is φ = 20630146.

The previous prime is 20630123. The next prime is 20630167. The reversal of 20630147 is 74103602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20630147 - 2⁶ = 20630083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20630167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10315073 + 10315074.

It is an arithmetic number, because the mean of its divisors is an integer number (10315074).

Almost surely, 2^20630147 is an apocalyptic number.

20630147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20630147 is an equidigital number, since it uses as much as digits as its factorization.

20630147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20630147 is about 4542.0421618475. The cubic root of 20630147 is about 274.2631380874.

Adding to 20630147 its reverse (74103602), we get a palindrome (94733749).

The spelling of 20630147 in words is "twenty million, six hundred thirty thousand, one hundred forty-seven".