646058786063 has 4 divisors (see below), whose sum is σ = 646166810568. Its totient is φ = 645950761560.

The previous prime is 646058786059. The next prime is 646058786077. The reversal of 646058786063 is 360687850646.

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 646058786063 - 2² = 646058786059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 646058785993 and 646058786011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646058786363) 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, 54003281 + ... + 54015242.

It is an arithmetic number, because the mean of its divisors is an integer number (161541702642).

Almost surely, 2^646058786063 is an apocalyptic number.

646058786063 is a deficient number, since it is larger than the sum of its proper divisors (108024505).

646058786063 is a wasteful number, since it uses less digits than its factorization.

646058786063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108024504.

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 646058786063 in words is "six hundred forty-six billion, fifty-eight million, seven hundred eighty-six thousand, sixty-three".