64281223 has 2 divisors, whose sum is σ = 64281224. Its totient is φ = 64281222.

The previous prime is 64281137. The next prime is 64281271. The reversal of 64281223 is 32218246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64281223 - 2¹³ = 64273031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64281191 and 64281200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64281323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32140611 + 32140612.

It is an arithmetic number, because the mean of its divisors is an integer number (32140612).

Almost surely, 2^64281223 is an apocalyptic number.

64281223 is a deficient number, since it is larger than the sum of its proper divisors (1).

64281223 is an equidigital number, since it uses as much as digits as its factorization.

64281223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 64281223 is about 8017.5571716078. The cubic root of 64281223 is about 400.5850251967.

Adding to 64281223 its reverse (32218246), we get a palindrome (96499469).

The spelling of 64281223 in words is "sixty-four million, two hundred eighty-one thousand, two hundred twenty-three".