64218463 has 2 divisors, whose sum is σ = 64218464. Its totient is φ = 64218462.

The previous prime is 64218433. The next prime is 64218467. The reversal of 64218463 is 36481246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64218463 - 2⁵ = 64218431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64218467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32109231 + 32109232.

It is an arithmetic number, because the mean of its divisors is an integer number (32109232).

Almost surely, 2^64218463 is an apocalyptic number.

64218463 is a deficient number, since it is larger than the sum of its proper divisors (1).

64218463 is an equidigital number, since it uses as much as digits as its factorization.

64218463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 34.

The square root of 64218463 is about 8013.6423054688. The cubic root of 64218463 is about 400.4546143687.

It can be divided in two parts, 6421 and 8463, that added together give a square (14884 = 122²).

The spelling of 64218463 in words is "sixty-four million, two hundred eighteen thousand, four hundred sixty-three".