686340097252 has 24 divisors (see below), whose sum is σ = 1235177760600. Its totient is φ = 333497303040.

The previous prime is 686340097237. The next prime is 686340097277. The reversal of 686340097252 is 252790043686.

It can be written as a sum of positive squares in 4 ways, for example, as 126333328356 + 560006768896 = 355434^2 + 748336^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 686340097252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8099877 + ... + 8184172.

It is an arithmetic number, because the mean of its divisors is an integer number (51465740025).

Almost surely, 2^686340097252 is an apocalyptic number.

It is an amenable number.

686340097252 is a deficient number, since it is larger than the sum of its proper divisors (548837663348).

686340097252 is a wasteful number, since it uses less digits than its factorization.

686340097252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16284351 (or 16284349 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 686340097252 in words is "six hundred eighty-six billion, three hundred forty million, ninety-seven thousand, two hundred fifty-two".