684804231442 has 8 divisors (see below), whose sum is σ = 1027507326156. Its totient is φ = 342301789392.

The previous prime is 684804231421. The next prime is 684804231457. The reversal of 684804231442 is 244132408486.

It can be written as a sum of positive squares in 2 ways, for example, as 679336959961 + 5467271481 = 824219^2 + 73941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 684804231392 and 684804231401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50154633 + ... + 50168284.

Almost surely, 2^684804231442 is an apocalyptic number.

684804231442 is a deficient number, since it is larger than the sum of its proper divisors (342703094714).

684804231442 is a wasteful number, since it uses less digits than its factorization.

684804231442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100326332.

The product of its (nonzero) digits is 1179648, while the sum is 46.

The spelling of 684804231442 in words is "six hundred eighty-four billion, eight hundred four million, two hundred thirty-one thousand, four hundred forty-two".