686305010101 has 4 divisors (see below), whose sum is σ = 686438356032. Its totient is φ = 686171664172.

The previous prime is 686305010093. The next prime is 686305010123. The reversal of 686305010101 is 101010503686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 686305010101 - 2³ = 686305010093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686305011101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66665245 + ... + 66675538.

It is an arithmetic number, because the mean of its divisors is an integer number (171609589008).

Almost surely, 2^686305010101 is an apocalyptic number.

It is an amenable number.

686305010101 is a deficient number, since it is larger than the sum of its proper divisors (133345931).

686305010101 is a wasteful number, since it uses less digits than its factorization.

686305010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133345930.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 686305010101 its reverse (101010503686), we get a palindrome (787315513787).

The spelling of 686305010101 in words is "six hundred eighty-six billion, three hundred five million, ten thousand, one hundred one".