686708134 has 8 divisors (see below), whose sum is σ = 1177213968. Its totient is φ = 294303480.

The previous prime is 686708129. The next prime is 686708159. The reversal of 686708134 is 431807686.

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

It is a super-2 number, since 2×686708134² = 943136122603523912, which contains 22 as substring.

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, 24525277 + ... + 24525304.

It is an arithmetic number, because the mean of its divisors is an integer number (147151746).

Almost surely, 2^686708134 is an apocalyptic number.

686708134 is a deficient number, since it is larger than the sum of its proper divisors (490505834).

686708134 is a wasteful number, since it uses less digits than its factorization.

686708134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49050590.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 686708134 is about 26205.1165614656. The cubic root of 686708134 is about 882.2480975507.

The spelling of 686708134 in words is "six hundred eighty-six million, seven hundred eight thousand, one hundred thirty-four".