64612663 has 2 divisors, whose sum is σ = 64612664. Its totient is φ = 64612662.

The previous prime is 64612661. The next prime is 64612697. The reversal of 64612663 is 36621646.

It is an a-pointer prime, because the next prime (64612697) can be obtained adding 64612663 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64612663 - 2¹ = 64612661 is a prime.

Together with 64612661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64612661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32306331 + 32306332.

It is an arithmetic number, because the mean of its divisors is an integer number (32306332).

Almost surely, 2^64612663 is an apocalyptic number.

64612663 is a deficient number, since it is larger than the sum of its proper divisors (1).

64612663 is an equidigital number, since it uses as much as digits as its factorization.

64612663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 34.

The square root of 64612663 is about 8038.2002338832. The cubic root of 64612663 is about 401.2723299006.

The spelling of 64612663 in words is "sixty-four million, six hundred twelve thousand, six hundred sixty-three".