64481863 has 2 divisors, whose sum is σ = 64481864. Its totient is φ = 64481862.

The previous prime is 64481831. The next prime is 64481869. The reversal of 64481863 is 36818446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64481863 - 2⁵ = 64481831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64481869) 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, 32240931 + 32240932.

It is an arithmetic number, because the mean of its divisors is an integer number (32240932).

Almost surely, 2^64481863 is an apocalyptic number.

64481863 is a deficient number, since it is larger than the sum of its proper divisors (1).

64481863 is an equidigital number, since it uses as much as digits as its factorization.

64481863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 40.

The square root of 64481863 is about 8030.0599624162. The cubic root of 64481863 is about 401.0013722919.

The spelling of 64481863 in words is "sixty-four million, four hundred eighty-one thousand, eight hundred sixty-three".