13220629 has 2 divisors, whose sum is σ = 13220630. Its totient is φ = 13220628.

The previous prime is 13220609. The next prime is 13220633. The reversal of 13220629 is 92602231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12006225 + 1214404 = 3465^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 13220629 - 2⁹ = 13220117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220609) 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, 6610314 + 6610315.

It is an arithmetic number, because the mean of its divisors is an integer number (6610315).

Almost surely, 2^13220629 is an apocalyptic number.

It is an amenable number.

13220629 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220629 is an equidigital number, since it uses as much as digits as its factorization.

13220629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13220629 is about 3636.0182892829. The cubic root of 13220629 is about 236.4562000692.

The spelling of 13220629 in words is "thirteen million, two hundred twenty thousand, six hundred twenty-nine".