64542463 has 2 divisors, whose sum is σ = 64542464. Its totient is φ = 64542462.

The previous prime is 64542461. The next prime is 64542503. The reversal of 64542463 is 36424546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64542463 - 2¹ = 64542461 is a prime.

Together with 64542461, 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 (64542461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32271231 + 32271232.

It is an arithmetic number, because the mean of its divisors is an integer number (32271232).

Almost surely, 2^64542463 is an apocalyptic number.

64542463 is a deficient number, since it is larger than the sum of its proper divisors (1).

64542463 is an equidigital number, since it uses as much as digits as its factorization.

64542463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 34.

The square root of 64542463 is about 8033.8323980526. The cubic root of 64542463 is about 401.1269532094.

The spelling of 64542463 in words is "sixty-four million, five hundred forty-two thousand, four hundred sixty-three".