684907709486 has 32 divisors (see below), whose sum is σ = 1379394551808. Its totient is φ = 246320454240.

The previous prime is 684907709471. The next prime is 684907709657.

684907709486 is nontrivially palindromic in base 10.

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 15 ways as a sum of consecutive naturals, for example, 171053870 + ... + 171057873.

It is an arithmetic number, because the mean of its divisors is an integer number (43106079744).

Almost surely, 2^684907709486 is an apocalyptic number.

684907709486 is an abundant number, since it is smaller than the sum of its proper divisors (694486842322).

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

684907709486 is a wasteful number, since it uses less digits than its factorization.

684907709486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342111776.

The product of its (nonzero) digits is 146313216, while the sum is 68.

The spelling of 684907709486 in words is "six hundred eighty-four billion, nine hundred seven million, seven hundred nine thousand, four hundred eighty-six".