684405282504486 has 16 divisors (see below), whose sum is σ = 1368810872411904. Its totient is φ = 228135042934344.

The previous prime is 684405282504457. The next prime is 684405282504491.

It is a happy number.

684405282504486 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×684405282504486² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24489631 + ... + 44368373.

It is an arithmetic number, because the mean of its divisors is an integer number (85550679525744).

Almost surely, 2^{684405282504486} is an apocalyptic number.

684405282504486 is an abundant number, since it is smaller than the sum of its proper divisors (684405589907418).

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

684405282504486 is a wasteful number, since it uses less digits than its factorization.

684405282504486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25616915.

The product of its (nonzero) digits is 471859200, while the sum is 66.

The spelling of 684405282504486 in words is "six hundred eighty-four trillion, four hundred five billion, two hundred eighty-two million, five hundred four thousand, four hundred eighty-six".