685923267744 has 1152 divisors, whose sum is σ = 2497155091200. Its totient is φ = 180502732800.

The previous prime is 685923267629. The next prime is 685923267751. The reversal of 685923267744 is 447762329586.

685923267744 is a `hidden beast` number, since 6 + 8 + 592 + 32 + 6 + 7 + 7 + 4 + 4 = 666.

685923267744 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×685923267744² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6292873962 + ... + 6292874070.

It is an arithmetic number, because the mean of its divisors is an integer number (2167669350).

Almost surely, 2^685923267744 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 685923267744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1248577545600).

685923267744 is an abundant number, since it is smaller than the sum of its proper divisors (1811231823456).

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

685923267744 is a wasteful number, since it uses less digits than its factorization.

685923267744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 222 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 63.

The spelling of 685923267744 in words is "six hundred eighty-five billion, nine hundred twenty-three million, two hundred sixty-seven thousand, seven hundred forty-four".