684411740 has 24 divisors (see below), whose sum is σ = 1443001392. Its totient is φ = 272672000.

The previous prime is 684411703. The next prime is 684411743. The reversal of 684411740 is 47114486.

684411740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 684411740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684411743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63149 + ... + 73188.

It is an arithmetic number, because the mean of its divisors is an integer number (60125058).

Almost surely, 2^684411740 is an apocalyptic number.

It is an amenable number.

684411740 is an abundant number, since it is smaller than the sum of its proper divisors (758589652).

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

684411740 is a wasteful number, since it uses less digits than its factorization.

684411740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136597 (or 136595 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 684411740 is about 26161.2641131884. The cubic root of 684411740 is about 881.2635687598.

The spelling of 684411740 in words is "six hundred eighty-four million, four hundred eleven thousand, seven hundred forty".