686788050 has 96 divisors (see below), whose sum is σ = 1914127488. Its totient is φ = 161694720.

The previous prime is 686788031. The next prime is 686788087. The reversal of 686788050 is 50887686.

It is a happy number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 37194 + ... + 52506.

It is an arithmetic number, because the mean of its divisors is an integer number (19938828).

Almost surely, 2^686788050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686788050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957063744).

686788050 is an abundant number, since it is smaller than the sum of its proper divisors (1227339438).

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

686788050 is a wasteful number, since it uses less digits than its factorization.

686788050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15364 (or 15359 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 686788050 is about 26206.6413338299. The cubic root of 686788050 is about 882.2823202433.

The spelling of 686788050 in words is "six hundred eighty-six million, seven hundred eighty-eight thousand, fifty".