685094380 has 12 divisors (see below), whose sum is σ = 1438698240. Its totient is φ = 274037744.

The previous prime is 685094351. The next prime is 685094387. The reversal of 685094380 is 83490586.

It is not an unprimeable number, because it can be changed into a prime (685094387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17127340 + ... + 17127379.

It is an arithmetic number, because the mean of its divisors is an integer number (119891520).

Almost surely, 2^685094380 is an apocalyptic number.

It is an amenable number.

685094380 is an abundant number, since it is smaller than the sum of its proper divisors (753603860).

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

685094380 is a wasteful number, since it uses less digits than its factorization.

685094380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34254728 (or 34254726 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 685094380 is about 26174.3076317216. The cubic root of 685094380 is about 881.5564654810.

The spelling of 685094380 in words is "six hundred eighty-five million, ninety-four thousand, three hundred eighty".