684465564486 has 64 divisors (see below), whose sum is σ = 1580123854080. Its totient is φ = 195479101440.

The previous prime is 684465564469. The next prime is 684465564493.

It is a happy number.

684465564486 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

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, 1172035 + ... + 1656078.

It is an arithmetic number, because the mean of its divisors is an integer number (24689435220).

Almost surely, 2^684465564486 is an apocalyptic number.

684465564486 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

684465564486 is an abundant number, since it is smaller than the sum of its proper divisors (895658289594).

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

684465564486 is a wasteful number, since it uses less digits than its factorization.

684465564486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828341.

The product of its digits is 530841600, while the sum is 66.

The spelling of 684465564486 in words is "six hundred eighty-four billion, four hundred sixty-five million, five hundred sixty-four thousand, four hundred eighty-six".