20030629 has 2 divisors, whose sum is σ = 20030630. Its totient is φ = 20030628.

The previous prime is 20030627. The next prime is 20030657. The reversal of 20030629 is 92603002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 49729 = 4470^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 20030629 - 2¹ = 20030627 is a prime.

It is a super-3 number, since 3×20030629³ (a number of 23 digits) contains 333 as substring.

Together with 20030627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20030627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015314 + 10015315.

It is an arithmetic number, because the mean of its divisors is an integer number (10015315).

Almost surely, 2^20030629 is an apocalyptic number.

It is an amenable number.

20030629 is a deficient number, since it is larger than the sum of its proper divisors (1).

20030629 is an equidigital number, since it uses as much as digits as its factorization.

20030629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20030629 is about 4475.5590712223. The cubic root of 20030629 is about 271.5802574790.

The spelling of 20030629 in words is "twenty million, thirty thousand, six hundred twenty-nine".