643114941 has 8 divisors (see below), whose sum is σ = 979984704. Its totient is φ = 367494240.

The previous prime is 643114939. The next prime is 643114949. The reversal of 643114941 is 149411346.

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

It is not a de Polignac number, because 643114941 - 2¹ = 643114939 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643114949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15312240 + ... + 15312281.

It is an arithmetic number, because the mean of its divisors is an integer number (122498088).

Almost surely, 2^643114941 is an apocalyptic number.

It is an amenable number.

643114941 is a deficient number, since it is larger than the sum of its proper divisors (336869763).

643114941 is a wasteful number, since it uses less digits than its factorization.

643114941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30624531.

The product of its digits is 10368, while the sum is 33.

The square root of 643114941 is about 25359.7109802143. The cubic root of 643114941 is about 863.1697257424.

The spelling of 643114941 in words is "six hundred forty-three million, one hundred fourteen thousand, nine hundred forty-one".