684748788 has 48 divisors (see below), whose sum is σ = 1648221120. Its totient is φ = 221094144.

The previous prime is 684748759. The next prime is 684748789. The reversal of 684748788 is 887847486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684748789) 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, 100143 + ... + 106761.

It is an arithmetic number, because the mean of its divisors is an integer number (34337940).

Almost surely, 2^684748788 is an apocalyptic number.

It is an amenable number.

684748788 is an abundant number, since it is smaller than the sum of its proper divisors (963472332).

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

684748788 is a wasteful number, since it uses less digits than its factorization.

684748788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6896 (or 6894 counting only the distinct ones).

The product of its digits is 19267584, while the sum is 60.

The square root of 684748788 is about 26167.7050579526. The cubic root of 684748788 is about 881.4082084850.

The spelling of 684748788 in words is "six hundred eighty-four million, seven hundred forty-eight thousand, seven hundred eighty-eight".