684006717222 has 48 divisors (see below), whose sum is σ = 1560206297520. Its totient is φ = 215975678400.

The previous prime is 684006717217. The next prime is 684006717271. The reversal of 684006717222 is 222717600486.

It is a happy number.

684006717222 is a `hidden beast` number, since 6 + 8 + 400 + 6 + 7 + 17 + 222 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2775472 + ... + 3011852.

It is an arithmetic number, because the mean of its divisors is an integer number (32504297865).

Almost surely, 2^684006717222 is an apocalyptic number.

684006717222 is an abundant number, since it is smaller than the sum of its proper divisors (876199580298).

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

684006717222 is a wasteful number, since it uses less digits than its factorization.

684006717222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244869 (or 244866 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 684006717222 in words is "six hundred eighty-four billion, six million, seven hundred seventeen thousand, two hundred twenty-two".