686578148 has 12 divisors (see below), whose sum is σ = 1264749360. Its totient is φ = 325221192.

The previous prime is 686578147. The next prime is 686578153. The reversal of 686578148 is 841875686.

686578148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×686578148³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 686578148.

It is not an unprimeable number, because it can be changed into a prime (686578141) 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, 4516886 + ... + 4517037.

It is an arithmetic number, because the mean of its divisors is an integer number (105395780).

Almost surely, 2^686578148 is an apocalyptic number.

It is an amenable number.

686578148 is a deficient number, since it is larger than the sum of its proper divisors (578171212).

686578148 is a wasteful number, since it uses less digits than its factorization.

686578148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9033946 (or 9033944 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The square root of 686578148 is about 26202.6362795807. The cubic root of 686578148 is about 882.1924275447.

The spelling of 686578148 in words is "six hundred eighty-six million, five hundred seventy-eight thousand, one hundred forty-eight".