686370135 has 64 divisors (see below), whose sum is σ = 1245404160. Its totient is φ = 319872000.

The previous prime is 686370131. The next prime is 686370149. The reversal of 686370135 is 531073686.

It is not a de Polignac number, because 686370135 - 2² = 686370131 is a prime.

It is a super-2 number, since 2×686370135² = 942207924439836450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 686370093 and 686370102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686370131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 479601 + ... + 481029.

It is an arithmetic number, because the mean of its divisors is an integer number (19459440).

Almost surely, 2^686370135 is an apocalyptic number.

686370135 is a deficient number, since it is larger than the sum of its proper divisors (559034025).

686370135 is a wasteful number, since it uses less digits than its factorization.

686370135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 686370135 is about 26198.6666645461. Note that the first 5 decimals coincide. The cubic root of 686370135 is about 882.1033257532.

The spelling of 686370135 in words is "six hundred eighty-six million, three hundred seventy thousand, one hundred thirty-five".