64493629 has 2 divisors, whose sum is σ = 64493630. Its totient is φ = 64493628.

The previous prime is 64493623. The next prime is 64493659. The reversal of 64493629 is 92639446.

64493629 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., 63968004 + 525625 = 7998^2 + 725^2 .

It is a cyclic number.

It is not a de Polignac number, because 64493629 - 2³ = 64493621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64493621) 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, 32246814 + 32246815.

It is an arithmetic number, because the mean of its divisors is an integer number (32246815).

Almost surely, 2^64493629 is an apocalyptic number.

It is an amenable number.

64493629 is a deficient number, since it is larger than the sum of its proper divisors (1).

64493629 is an equidigital number, since it uses as much as digits as its factorization.

64493629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 43.

The square root of 64493629 is about 8030.7925511745. The cubic root of 64493629 is about 401.0257610372.

The spelling of 64493629 in words is "sixty-four million, four hundred ninety-three thousand, six hundred twenty-nine".