686869054 has 8 divisors (see below), whose sum is σ = 1090909728. Its totient is φ = 323232480.

The previous prime is 686869049. The next prime is 686869061. The reversal of 686869054 is 450968686.

686869054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 686868992 and 686869010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10100982 + ... + 10101049.

It is an arithmetic number, because the mean of its divisors is an integer number (136363716).

Almost surely, 2^686869054 is an apocalyptic number.

686869054 is a deficient number, since it is larger than the sum of its proper divisors (404040674).

686869054 is a wasteful number, since it uses less digits than its factorization.

686869054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202050.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The square root of 686869054 is about 26208.1867743650. The cubic root of 686869054 is about 882.3170061445.

The spelling of 686869054 in words is "six hundred eighty-six million, eight hundred sixty-nine thousand, fifty-four".