63642843 has 24 divisors (see below), whose sum is σ = 101190960. Its totient is φ = 38223360.

The previous prime is 63642833. The next prime is 63642857. The reversal of 63642843 is 34824636.

It is a happy number.

63642843 is a `hidden beast` number, since 6 + 3 + 642 + 8 + 4 + 3 = 666.

It is not a de Polignac number, because 63642843 - 2⁶ = 63642779 is a prime.

It is a super-3 number, since 3×63642843³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 63642798 and 63642807.

It is not an unprimeable number, because it can be changed into a prime (63642833) 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, 8343 + ... + 14031.

It is an arithmetic number, because the mean of its divisors is an integer number (4216290).

Almost surely, 2^63642843 is an apocalyptic number.

63642843 is a deficient number, since it is larger than the sum of its proper divisors (37548117).

63642843 is a wasteful number, since it uses less digits than its factorization.

63642843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5819 (or 5816 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 63642843 is about 7977.6464574460. The cubic root of 63642843 is about 399.2545344826.

The spelling of 63642843 in words is "sixty-three million, six hundred forty-two thousand, eight hundred forty-three".