64347473 has 2 divisors, whose sum is σ = 64347474. Its totient is φ = 64347472.

The previous prime is 64347469. The next prime is 64347539. The reversal of 64347473 is 37474346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46471489 + 17875984 = 6817^2 + 4228^2 .

It is a cyclic number.

It is not a de Polignac number, because 64347473 - 2² = 64347469 is a prime.

It is not a weakly prime, because it can be changed into another prime (64347973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32173736 + 32173737.

It is an arithmetic number, because the mean of its divisors is an integer number (32173737).

Almost surely, 2^64347473 is an apocalyptic number.

It is an amenable number.

64347473 is a deficient number, since it is larger than the sum of its proper divisors (1).

64347473 is an equidigital number, since it uses as much as digits as its factorization.

64347473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 38.

The square root of 64347473 is about 8021.6876653233. The cubic root of 64347473 is about 400.7225959351.

The spelling of 64347473 in words is "sixty-four million, three hundred forty-seven thousand, four hundred seventy-three".