646601808346 has 32 divisors (see below), whose sum is σ = 1090131436800. Its totient is φ = 285402019584.

The previous prime is 646601808283. The next prime is 646601808401. The reversal of 646601808346 is 643808106646.

646601808346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 646601808293 and 646601808302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3128466 + ... + 3328738.

It is an arithmetic number, because the mean of its divisors is an integer number (34066607400).

Almost surely, 2^646601808346 is an apocalyptic number.

646601808346 is a deficient number, since it is larger than the sum of its proper divisors (443529628454).

646601808346 is a wasteful number, since it uses less digits than its factorization.

646601808346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205710.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 646601808346 in words is "six hundred forty-six billion, six hundred one million, eight hundred eight thousand, three hundred forty-six".