64247873 has 16 divisors (see below), whose sum is σ = 70680000. Its totient is φ = 58180032.

The previous prime is 64247863. The next prime is 64247881. The reversal of 64247873 is 37874246.

It is a cyclic number.

It is not a de Polignac number, because 64247873 - 2⁴ = 64247857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64247873.

It is not an unprimeable number, because it can be changed into a prime (64247803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40703 + ... + 42251.

It is an arithmetic number, because the mean of its divisors is an integer number (4417500).

Almost surely, 2^64247873 is an apocalyptic number.

It is an amenable number.

64247873 is a deficient number, since it is larger than the sum of its proper divisors (6432127).

64247873 is a wasteful number, since it uses less digits than its factorization.

64247873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664.

The product of its digits is 225792, while the sum is 41.

The square root of 64247873 is about 8015.4770912279. The cubic root of 64247873 is about 400.5157368363.

The spelling of 64247873 in words is "sixty-four million, two hundred forty-seven thousand, eight hundred seventy-three".