64629673 has 2 divisors, whose sum is σ = 64629674. Its totient is φ = 64629672.

The previous prime is 64629641. The next prime is 64629703. The reversal of 64629673 is 37692646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41126569 + 23503104 = 6413^2 + 4848^2 .

It is a cyclic number.

It is not a de Polignac number, because 64629673 - 2⁵ = 64629641 is a prime.

It is not a weakly prime, because it can be changed into another prime (64629623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32314836 + 32314837.

It is an arithmetic number, because the mean of its divisors is an integer number (32314837).

Almost surely, 2^64629673 is an apocalyptic number.

It is an amenable number.

64629673 is a deficient number, since it is larger than the sum of its proper divisors (1).

64629673 is an equidigital number, since it uses as much as digits as its factorization.

64629673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 64629673 is about 8039.2582369271. The cubic root of 64629673 is about 401.3075399411.

The spelling of 64629673 in words is "sixty-four million, six hundred twenty-nine thousand, six hundred seventy-three".