686450500 has 48 divisors (see below), whose sum is σ = 1506960000. Its totient is φ = 273160800.

The previous prime is 686450489. The next prime is 686450549. The reversal of 686450500 is 5054686.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96051 + ... + 102949.

It is an arithmetic number, because the mean of its divisors is an integer number (31395000).

Almost surely, 2^686450500 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 686450500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753480000).

686450500 is an abundant number, since it is smaller than the sum of its proper divisors (820509500).

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

686450500 is a wasteful number, since it uses less digits than its factorization.

686450500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7117 (or 7105 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 686450500 is about 26200.2003809131. The cubic root of 686450500 is about 882.1377520117.

The spelling of 686450500 in words is "six hundred eighty-six million, four hundred fifty thousand, five hundred".