64936849 has 2 divisors, whose sum is σ = 64936850. Its totient is φ = 64936848.

The previous prime is 64936811. The next prime is 64936853. The reversal of 64936849 is 94863946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 53824 = 8055^2 + 232^2 .

It is a cyclic number.

It is not a de Polignac number, because 64936849 - 2⁷ = 64936721 is a prime.

It is not a weakly prime, because it can be changed into another prime (64936349) 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, 32468424 + 32468425.

It is an arithmetic number, because the mean of its divisors is an integer number (32468425).

Almost surely, 2^64936849 is an apocalyptic number.

It is an amenable number.

64936849 is a deficient number, since it is larger than the sum of its proper divisors (1).

64936849 is an equidigital number, since it uses as much as digits as its factorization.

64936849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 64936849 is about 8058.3403378115. The cubic root of 64936849 is about 401.9423219477.

The spelling of 64936849 in words is "sixty-four million, nine hundred thirty-six thousand, eight hundred forty-nine".