685296939392 has 384 divisors, whose sum is σ = 1633901492160. Its totient is φ = 284021489664.

The previous prime is 685296939391. The next prime is 685296939401. The reversal of 685296939392 is 293939692586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685296939391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2666524928 + ... + 2666525184.

Almost surely, 2^685296939392 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 685296939392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816950746080).

685296939392 is an abundant number, since it is smaller than the sum of its proper divisors (948604552768).

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

685296939392 is a wasteful number, since it uses less digits than its factorization.

685296939392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 507 counting only the distinct ones).

The product of its digits is 340122240, while the sum is 71.

The spelling of 685296939392 in words is "six hundred eighty-five billion, two hundred ninety-six million, nine hundred thirty-nine thousand, three hundred ninety-two".