64729501 has 2 divisors, whose sum is σ = 64729502. Its totient is φ = 64729500.

The previous prime is 64729477. The next prime is 64729513. The reversal of 64729501 is 10592746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59444100 + 5285401 = 7710^2 + 2299^2 .

It is a cyclic number.

It is not a de Polignac number, because 64729501 - 2¹³ = 64721309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64729531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32364750 + 32364751.

It is an arithmetic number, because the mean of its divisors is an integer number (32364751).

Almost surely, 2^64729501 is an apocalyptic number.

It is an amenable number.

64729501 is a deficient number, since it is larger than the sum of its proper divisors (1).

64729501 is an equidigital number, since it uses as much as digits as its factorization.

64729501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 64729501 is about 8045.4646230034. The cubic root of 64729501 is about 401.5140556083.

The spelling of 64729501 in words is "sixty-four million, seven hundred twenty-nine thousand, five hundred one".