686068570 has 32 divisors (see below), whose sum is σ = 1372619520. Its totient is φ = 244770240.

The previous prime is 686068567. The next prime is 686068571. The reversal of 686068570 is 75860686.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 686068570.

It is not an unprimeable number, because it can be changed into a prime (686068571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53010 + ... + 64669.

It is an arithmetic number, because the mean of its divisors is an integer number (42894360).

Almost surely, 2^686068570 is an apocalyptic number.

686068570 is an abundant number, since it is smaller than the sum of its proper divisors (686550950).

686068570 is a wasteful number, since it uses less digits than its factorization.

686068570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117750.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 686068570 is about 26192.9106820911. The cubic root of 686068570 is about 881.9741192489.

The spelling of 686068570 in words is "six hundred eighty-six million, sixty-eight thousand, five hundred seventy".