64463873 has 2 divisors, whose sum is σ = 64463874. Its totient is φ = 64463872.

The previous prime is 64463831. The next prime is 64463887. The reversal of 64463873 is 37836446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60575089 + 3888784 = 7783^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 64463873 - 2²⁴ = 47686657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64463873.

It is not a weakly prime, because it can be changed into another prime (64463173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32231936 + 32231937.

It is an arithmetic number, because the mean of its divisors is an integer number (32231937).

Almost surely, 2^64463873 is an apocalyptic number.

It is an amenable number.

64463873 is a deficient number, since it is larger than the sum of its proper divisors (1).

64463873 is an equidigital number, since it uses as much as digits as its factorization.

64463873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 64463873 is about 8028.9397182941. The cubic root of 64463873 is about 400.9640766073.

The spelling of 64463873 in words is "sixty-four million, four hundred sixty-three thousand, eight hundred seventy-three".