686095488 has 128 divisors (see below), whose sum is σ = 2180841600. Its totient is φ = 211092480.

The previous prime is 686095447. The next prime is 686095499. The reversal of 686095488 is 884590686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 37293 + ... + 52563.

It is an arithmetic number, because the mean of its divisors is an integer number (17037825).

Almost surely, 2^686095488 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 686095488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090420800).

686095488 is an abundant number, since it is smaller than the sum of its proper divisors (1494746112).

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

686095488 is a wasteful number, since it uses less digits than its factorization.

686095488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15307 (or 15289 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 686095488 is about 26193.4245183787. The cubic root of 686095488 is about 881.9856538923.

The spelling of 686095488 in words is "six hundred eighty-six million, ninety-five thousand, four hundred eighty-eight".