685942272 has 60 divisors (see below), whose sum is σ = 1979689140. Its totient is φ = 228645888.

The previous prime is 685942267. The next prime is 685942273. The reversal of 685942272 is 272249586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685942273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69822 + ... + 79037.

It is an arithmetic number, because the mean of its divisors is an integer number (32994819).

Almost surely, 2^685942272 is an apocalyptic number.

It is an amenable number.

685942272 is an abundant number, since it is smaller than the sum of its proper divisors (1293746868).

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

685942272 is a wasteful number, since it uses less digits than its factorization.

685942272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148883 (or 148864 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 685942272 is about 26190.4996515912. The cubic root of 685942272 is about 881.9199952112.

The spelling of 685942272 in words is "six hundred eighty-five million, nine hundred forty-two thousand, two hundred seventy-two".