64853851 has 2 divisors, whose sum is σ = 64853852. Its totient is φ = 64853850.

The previous prime is 64853849. The next prime is 64853869. The reversal of 64853851 is 15835846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64853851 - 2¹ = 64853849 is a prime.

Together with 64853849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64853051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32426925 + 32426926.

It is an arithmetic number, because the mean of its divisors is an integer number (32426926).

Almost surely, 2^64853851 is an apocalyptic number.

64853851 is a deficient number, since it is larger than the sum of its proper divisors (1).

64853851 is an equidigital number, since it uses as much as digits as its factorization.

64853851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 40.

The square root of 64853851 is about 8053.1888714968. The cubic root of 64853851 is about 401.7710035439.

The spelling of 64853851 in words is "sixty-four million, eight hundred fifty-three thousand, eight hundred fifty-one".