684473742 has 72 divisors (see below), whose sum is σ = 1548322776. Its totient is φ = 218411424.

The previous prime is 684473731. The next prime is 684473749. The reversal of 684473742 is 247374486.

684473742 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 (684473749) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3474388 + ... + 3474584.

It is an arithmetic number, because the mean of its divisors is an integer number (21504483).

Almost surely, 2^684473742 is an apocalyptic number.

684473742 is an abundant number, since it is smaller than the sum of its proper divisors (863849034).

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

684473742 is a wasteful number, since it uses less digits than its factorization.

684473742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 312 counting only the distinct ones).

The product of its digits is 903168, while the sum is 45.

The square root of 684473742 is about 26162.4490826069. The cubic root of 684473742 is about 881.2901796679.

The spelling of 684473742 in words is "six hundred eighty-four million, four hundred seventy-three thousand, seven hundred forty-two".