65628929 has 2 divisors, whose sum is σ = 65628930. Its totient is φ = 65628928.

The previous prime is 65628923. The next prime is 65628947. The reversal of 65628929 is 92982656.

It is a happy number.

65628929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 16418704 = 7015^2 + 4052^2 .

It is a cyclic number.

It is not a de Polignac number, because 65628929 - 2¹² = 65624833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65628923) 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, 32814464 + 32814465.

It is an arithmetic number, because the mean of its divisors is an integer number (32814465).

Almost surely, 2^65628929 is an apocalyptic number.

It is an amenable number.

65628929 is a deficient number, since it is larger than the sum of its proper divisors (1).

65628929 is an equidigital number, since it uses as much as digits as its factorization.

65628929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 65628929 is about 8101.1683725250. The cubic root of 65628929 is about 403.3652110739.

The spelling of 65628929 in words is "sixty-five million, six hundred twenty-eight thousand, nine hundred twenty-nine".