64481071 has 2 divisors, whose sum is σ = 64481072. Its totient is φ = 64481070.

The previous prime is 64481063. The next prime is 64481083. The reversal of 64481071 is 17018446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64481071 - 2³ = 64481063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64481171) 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, 32240535 + 32240536.

It is an arithmetic number, because the mean of its divisors is an integer number (32240536).

Almost surely, 2^64481071 is an apocalyptic number.

64481071 is a deficient number, since it is larger than the sum of its proper divisors (1).

64481071 is an equidigital number, since it uses as much as digits as its factorization.

64481071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 64481071 is about 8030.0106475645. The cubic root of 64481071 is about 400.9997305156. Note that the first 3 decimals are identical.

The spelling of 64481071 in words is "sixty-four million, four hundred eighty-one thousand, seventy-one".