684036126 has 48 divisors (see below), whose sum is σ = 1519992864. Its totient is φ = 222236352.

The previous prime is 684036113. The next prime is 684036151. The reversal of 684036126 is 621630486.

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, 147495 + ... + 152061.

It is an arithmetic number, because the mean of its divisors is an integer number (31666518).

Almost surely, 2^684036126 is an apocalyptic number.

684036126 is an abundant number, since it is smaller than the sum of its proper divisors (835956738).

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

684036126 is a wasteful number, since it uses less digits than its factorization.

684036126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4782 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 684036126 is about 26154.0843081917. The cubic root of 684036126 is about 881.1023229831.

It can be divided in two parts, 68403 and 6126, that added together give a square (74529 = 273²).

The spelling of 684036126 in words is "six hundred eighty-four million, thirty-six thousand, one hundred twenty-six".