686795697 has 24 divisors (see below), whose sum is σ = 1136064384. Its totient is φ = 391656384.

The previous prime is 686795611. The next prime is 686795723. The reversal of 686795697 is 796597686.

686795697 is a `hidden beast` number, since 6 + 8 + 67 + 9 + 569 + 7 = 666.

It is not a de Polignac number, because 686795697 - 2¹⁵ = 686762929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (686795497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20853 + ... + 42525.

It is an arithmetic number, because the mean of its divisors is an integer number (47336016).

Almost surely, 2^686795697 is an apocalyptic number.

It is an amenable number.

686795697 is a deficient number, since it is larger than the sum of its proper divisors (449268687).

686795697 is a wasteful number, since it uses less digits than its factorization.

686795697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22189 (or 22186 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The square root of 686795697 is about 26206.7872315551. The cubic root of 686795697 is about 882.2855948042.

The spelling of 686795697 in words is "six hundred eighty-six million, seven hundred ninety-five thousand, six hundred ninety-seven".