684357912212 has 48 divisors (see below), whose sum is σ = 1321887306432. Its totient is φ = 308011334400.

The previous prime is 684357912211. The next prime is 684357912247. The reversal of 684357912212 is 212219753486.

684357912212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684357912211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131587 + ... + 1627637.

It is an arithmetic number, because the mean of its divisors is an integer number (27539318884).

Almost surely, 2^684357912212 is an apocalyptic number.

It is an amenable number.

684357912212 is a deficient number, since it is larger than the sum of its proper divisors (637529394220).

684357912212 is a wasteful number, since it uses less digits than its factorization.

684357912212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496728 (or 496726 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The spelling of 684357912212 in words is "six hundred eighty-four billion, three hundred fifty-seven million, nine hundred twelve thousand, two hundred twelve".