684364534238 has 64 divisors (see below), whose sum is σ = 1323165265920. Its totient is φ = 257638060800.

The previous prime is 684364534237. The next prime is 684364534267. The reversal of 684364534238 is 832435463486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684364534237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3007658 + ... + 3227186.

It is an arithmetic number, because the mean of its divisors is an integer number (20674457280).

Almost surely, 2^684364534238 is an apocalyptic number.

684364534238 is a deficient number, since it is larger than the sum of its proper divisors (638800731682).

684364534238 is a wasteful number, since it uses less digits than its factorization.

684364534238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220233.

The product of its digits is 39813120, while the sum is 56.

The spelling of 684364534238 in words is "six hundred eighty-four billion, three hundred sixty-four million, five hundred thirty-four thousand, two hundred thirty-eight".