646113839 has 8 divisors (see below), whose sum is σ = 743729280. Its totient is φ = 549826776.

The previous prime is 646113833. The next prime is 646113847. The reversal of 646113839 is 938311646.

646113839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 646113839 - 2²⁴ = 629336623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 646113796 and 646113805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646113833) 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, 331049 + ... + 332994.

It is an arithmetic number, because the mean of its divisors is an integer number (92966160).

Almost surely, 2^646113839 is an apocalyptic number.

646113839 is a deficient number, since it is larger than the sum of its proper divisors (97615441).

646113839 is a wasteful number, since it uses less digits than its factorization.

646113839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664189.

The product of its digits is 93312, while the sum is 41.

The square root of 646113839 is about 25418.7694234005. The cubic root of 646113839 is about 864.5093228799.

The spelling of 646113839 in words is "six hundred forty-six million, one hundred thirteen thousand, eight hundred thirty-nine".