684742112 has 12 divisors (see below), whose sum is σ = 1348086096. Its totient is φ = 342371040.

The previous prime is 684742111. The next prime is 684742129. The reversal of 684742112 is 211247486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684742111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10699064 + ... + 10699127.

It is an arithmetic number, because the mean of its divisors is an integer number (112340508).

Almost surely, 2^684742112 is an apocalyptic number.

It is an amenable number.

684742112 is a deficient number, since it is larger than the sum of its proper divisors (663343984).

684742112 is a wasteful number, since it uses less digits than its factorization.

684742112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21398201 (or 21398193 counting only the distinct ones).

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

The square root of 684742112 is about 26167.5774958249. The cubic root of 684742112 is about 881.4053440281.

Adding to 684742112 its reverse (211247486), we get a palindrome (895989598).

The spelling of 684742112 in words is "six hundred eighty-four million, seven hundred forty-two thousand, one hundred twelve".