64701893 has 2 divisors, whose sum is σ = 64701894. Its totient is φ = 64701892.

The previous prime is 64701887. The next prime is 64701943. The reversal of 64701893 is 39810746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44063044 + 20638849 = 6638^2 + 4543^2 .

It is a cyclic number.

It is not a de Polignac number, because 64701893 - 2¹⁰ = 64700869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64701853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32350946 + 32350947.

It is an arithmetic number, because the mean of its divisors is an integer number (32350947).

Almost surely, 2^64701893 is an apocalyptic number.

It is an amenable number.

64701893 is a deficient number, since it is larger than the sum of its proper divisors (1).

64701893 is an equidigital number, since it uses as much as digits as its factorization.

64701893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 64701893 is about 8043.7486907536. The cubic root of 64701893 is about 401.4569637814.

The spelling of 64701893 in words is "sixty-four million, seven hundred one thousand, eight hundred ninety-three".