686136148 has 48 divisors (see below), whose sum is σ = 1254839040. Its totient is φ = 328032000.

The previous prime is 686136137. The next prime is 686136173. The reversal of 686136148 is 841631686.

It is a happy number.

686136148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2550558 + ... + 2550826.

It is an arithmetic number, because the mean of its divisors is an integer number (26142480).

Almost surely, 2^686136148 is an apocalyptic number.

It is an amenable number.

686136148 is a deficient number, since it is larger than the sum of its proper divisors (568702892).

686136148 is a wasteful number, since it uses less digits than its factorization.

686136148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 686136148 is about 26194.2006558704. The cubic root of 686136148 is about 882.0030765537.

The spelling of 686136148 in words is "six hundred eighty-six million, one hundred thirty-six thousand, one hundred forty-eight".