63508943 has 4 divisors (see below), whose sum is σ = 63551040. Its totient is φ = 63466848.

The previous prime is 63508937. The next prime is 63508967. The reversal of 63508943 is 34980536.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63508943 - 2²⁰ = 62460367 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63508897 and 63508906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63508903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18698 + ... + 21831.

It is an arithmetic number, because the mean of its divisors is an integer number (15887760).

Almost surely, 2^63508943 is an apocalyptic number.

63508943 is a deficient number, since it is larger than the sum of its proper divisors (42097).

63508943 is a wasteful number, since it uses less digits than its factorization.

63508943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42096.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 63508943 is about 7969.2498392258. The cubic root of 63508943 is about 398.9743368691.

The spelling of 63508943 in words is "sixty-three million, five hundred eight thousand, nine hundred forty-three".