685207672212 has 96 divisors (see below), whose sum is σ = 1884458741760. Its totient is φ = 189685238400.

The previous prime is 685207672159. The next prime is 685207672213. The reversal of 685207672212 is 212276702586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685207672213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281587 + ... + 1204037.

It is an arithmetic number, because the mean of its divisors is an integer number (19629778560).

Almost surely, 2^685207672212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685207672212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942229370880).

685207672212 is an abundant number, since it is smaller than the sum of its proper divisors (1199251069548).

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

685207672212 is a wasteful number, since it uses less digits than its factorization.

685207672212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922741 (or 922739 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 685207672212 in words is "six hundred eighty-five billion, two hundred seven million, six hundred seventy-two thousand, two hundred twelve".