63873243 has 24 divisors (see below), whose sum is σ = 105861600. Its totient is φ = 36353664.

The previous prime is 63873241. The next prime is 63873259. The reversal of 63873243 is 34237836.

It is not a de Polignac number, because 63873243 - 2¹ = 63873241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63873198 and 63873207.

It is not an unprimeable number, because it can be changed into a prime (63873241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15063 + ... + 18831.

It is an arithmetic number, because the mean of its divisors is an integer number (4410900).

Almost surely, 2^63873243 is an apocalyptic number.

63873243 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

63873243 is a deficient number, since it is larger than the sum of its proper divisors (41988357).

63873243 is a wasteful number, since it uses less digits than its factorization.

63873243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051 (or 4048 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 63873243 is about 7992.0737609209. The cubic root of 63873243 is about 399.7357483828.

The spelling of 63873243 in words is "sixty-three million, eight hundred seventy-three thousand, two hundred forty-three".