64655629 has 2 divisors, whose sum is σ = 64655630. Its totient is φ = 64655628.

The previous prime is 64655627. The next prime is 64655659. The reversal of 64655629 is 92655646.

64655629 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., 63441225 + 1214404 = 7965^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 64655629 - 2¹ = 64655627 is a prime.

It is a super-2 number, since 2×64655629² = 8360700722771282, which contains 22 as substring.

Together with 64655627, 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 (64655621) 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, 32327814 + 32327815.

It is an arithmetic number, because the mean of its divisors is an integer number (32327815).

Almost surely, 2^64655629 is an apocalyptic number.

It is an amenable number.

64655629 is a deficient number, since it is larger than the sum of its proper divisors (1).

64655629 is an equidigital number, since it uses as much as digits as its factorization.

64655629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

The square root of 64655629 is about 8040.8724029175. The cubic root of 64655629 is about 401.3612559505.

The spelling of 64655629 in words is "sixty-four million, six hundred fifty-five thousand, six hundred twenty-nine".