64102729 has 2 divisors, whose sum is σ = 64102730. Its totient is φ = 64102728.

The previous prime is 64102693. The next prime is 64102747. The reversal of 64102729 is 92720146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50765625 + 13337104 = 7125^2 + 3652^2 .

It is a cyclic number.

It is not a de Polignac number, because 64102729 - 2⁷ = 64102601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64102729.

It is not a weakly prime, because it can be changed into another prime (64102799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32051364 + 32051365.

It is an arithmetic number, because the mean of its divisors is an integer number (32051365).

Almost surely, 2^64102729 is an apocalyptic number.

It is an amenable number.

64102729 is a deficient number, since it is larger than the sum of its proper divisors (1).

64102729 is an equidigital number, since it uses as much as digits as its factorization.

64102729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 64102729 is about 8006.4179880893. The cubic root of 64102729 is about 400.2139043419.

The spelling of 64102729 in words is "sixty-four million, one hundred two thousand, seven hundred twenty-nine".