64936853 has 2 divisors, whose sum is σ = 64936854. Its totient is φ = 64936852.

The previous prime is 64936849. The next prime is 64936871. The reversal of 64936853 is 35863946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41190724 + 23746129 = 6418^2 + 4873^2 .

It is a cyclic number.

It is not a de Polignac number, because 64936853 - 2² = 64936849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64935853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32468426 + 32468427.

It is an arithmetic number, because the mean of its divisors is an integer number (32468427).

Almost surely, 2^64936853 is an apocalyptic number.

It is an amenable number.

64936853 is a deficient number, since it is larger than the sum of its proper divisors (1).

64936853 is an equidigital number, since it uses as much as digits as its factorization.

64936853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The square root of 64936853 is about 8058.3405860016. The cubic root of 64936853 is about 401.9423302007.

The spelling of 64936853 in words is "sixty-four million, nine hundred thirty-six thousand, eight hundred fifty-three".