63973243 has 8 divisors (see below), whose sum is σ = 67648896. Its totient is φ = 60398400.

The previous prime is 63973241. The next prime is 63973271. The reversal of 63973243 is 34237936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63973243 - 2¹ = 63973241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63973241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23896 + ... + 26437.

It is an arithmetic number, because the mean of its divisors is an integer number (8456112).

Almost surely, 2^63973243 is an apocalyptic number.

63973243 is a deficient number, since it is larger than the sum of its proper divisors (3675653).

63973243 is a wasteful number, since it uses less digits than its factorization.

63973243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50405.

The product of its digits is 81648, while the sum is 37.

The square root of 63973243 is about 7998.3275126741. The cubic root of 63973243 is about 399.9442484798.

The spelling of 63973243 in words is "sixty-three million, nine hundred seventy-three thousand, two hundred forty-three".