684842050 has 12 divisors (see below), whose sum is σ = 1273806306. Its totient is φ = 273936800.

The previous prime is 684842027. The next prime is 684842057. The reversal of 684842050 is 50248486.

It can be written as a sum of positive squares in 3 ways, for example, as 590344209 + 94497841 = 24297^2 + 9721^2 .

It is not an unprimeable number, because it can be changed into a prime (684842057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6848371 + ... + 6848470.

Almost surely, 2^684842050 is an apocalyptic number.

684842050 is a deficient number, since it is larger than the sum of its proper divisors (588964256).

684842050 is a wasteful number, since it uses less digits than its factorization.

684842050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13696853 (or 13696848 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 684842050 is about 26169.4870029964. The cubic root of 684842050 is about 881.4482222644.

The spelling of 684842050 in words is "six hundred eighty-four million, eight hundred forty-two thousand, fifty".