64853231 has 2 divisors, whose sum is σ = 64853232. Its totient is φ = 64853230.

The previous prime is 64853207. The next prime is 64853297. The reversal of 64853231 is 13235846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64853231 - 2⁶ = 64853167 is a prime.

It is a super-2 number, since 2×64853231² = 8411883142278722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64853531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32426615 + 32426616.

It is an arithmetic number, because the mean of its divisors is an integer number (32426616).

Almost surely, 2^64853231 is an apocalyptic number.

64853231 is a deficient number, since it is larger than the sum of its proper divisors (1).

64853231 is an equidigital number, since it uses as much as digits as its factorization.

64853231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 64853231 is about 8053.1503773368. The cubic root of 64853231 is about 401.7697232354.

The spelling of 64853231 in words is "sixty-four million, eight hundred fifty-three thousand, two hundred thirty-one".