685744212 has 12 divisors (see below), whose sum is σ = 1600069856. Its totient is φ = 228581400.

The previous prime is 685744193. The next prime is 685744231. The reversal of 685744212 is 212447586.

It is an interprime number because it is at equal distance from previous prime (685744193) and next prime (685744231).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 28572664 + ... + 28572687.

Almost surely, 2^685744212 is an apocalyptic number.

It is an amenable number.

685744212 is an abundant number, since it is smaller than the sum of its proper divisors (914325644).

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

685744212 is a wasteful number, since it uses less digits than its factorization.

685744212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57145358 (or 57145356 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 685744212 is about 26186.7182365412. The cubic root of 685744212 is about 881.8351047397.

The spelling of 685744212 in words is "six hundred eighty-five million, seven hundred forty-four thousand, two hundred twelve".