686795706 has 32 divisors (see below), whose sum is σ = 1551240000. Its totient is φ = 225177840.

The previous prime is 686795611. The next prime is 686795723. The reversal of 686795706 is 607597686.

It is a happy number.

686795706 is a `hidden beast` number, since 6 + 8 + 67 + 9 + 570 + 6 = 666.

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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100956 + ... + 107543.

It is an arithmetic number, because the mean of its divisors is an integer number (48476250).

Almost surely, 2^686795706 is an apocalyptic number.

686795706 is an abundant number, since it is smaller than the sum of its proper divisors (864444294).

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

686795706 is a wasteful number, since it uses less digits than its factorization.

686795706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208571 (or 208565 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The square root of 686795706 is about 26206.7874032664. The cubic root of 686795706 is about 882.2855986581.

The spelling of 686795706 in words is "six hundred eighty-six million, seven hundred ninety-five thousand, seven hundred six".