64446223 has 2 divisors, whose sum is σ = 64446224. Its totient is φ = 64446222.

The previous prime is 64446211. The next prime is 64446227. The reversal of 64446223 is 32264446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64446223 - 2¹⁷ = 64315151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64446227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32223111 + 32223112.

It is an arithmetic number, because the mean of its divisors is an integer number (32223112).

Almost surely, 2^64446223 is an apocalyptic number.

64446223 is a deficient number, since it is larger than the sum of its proper divisors (1).

64446223 is an equidigital number, since it uses as much as digits as its factorization.

64446223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 31.

The square root of 64446223 is about 8027.8404941802. The cubic root of 64446223 is about 400.9274790444.

The spelling of 64446223 in words is "sixty-four million, four hundred forty-six thousand, two hundred twenty-three".