655403210646 has 64 divisors (see below), whose sum is σ = 1411785884160. Its totient is φ = 202081651200.

The previous prime is 655403210639. The next prime is 655403210689. The reversal of 655403210646 is 646012304556.

It is a junction number, because it is equal to n+sod(n) for n = 655403210598 and 655403210607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29784120 + ... + 29806116.

It is an arithmetic number, because the mean of its divisors is an integer number (22059154440).

Almost surely, 2^655403210646 is an apocalyptic number.

655403210646 is an abundant number, since it is smaller than the sum of its proper divisors (756382673514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655403210646 is a wasteful number, since it uses less digits than its factorization.

655403210646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27029.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 655403210646 in words is "six hundred fifty-five billion, four hundred three million, two hundred ten thousand, six hundred forty-six".