20630069 has 2 divisors, whose sum is σ = 20630070. Its totient is φ = 20630068.

The previous prime is 20630063. The next prime is 20630083. The reversal of 20630069 is 96003602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 2439844 = 4265^2 + 1562^2 .

It is a cyclic number.

It is not a de Polignac number, because 20630069 - 2¹² = 20625973 is a prime.

It is a super-2 number, since 2×20630069² = 851199493889522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20630063) 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 as a sum of consecutive naturals, namely, 10315034 + 10315035.

It is an arithmetic number, because the mean of its divisors is an integer number (10315035).

Almost surely, 2^20630069 is an apocalyptic number.

It is an amenable number.

20630069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20630069 is an equidigital number, since it uses as much as digits as its factorization.

20630069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 20630069 is about 4542.0335753933. The cubic root of 20630069 is about 274.2627924354.

The spelling of 20630069 in words is "twenty million, six hundred thirty thousand, sixty-nine".