686448147 has 32 divisors (see below), whose sum is σ = 1145548800. Its totient is φ = 355209120.

The previous prime is 686448107. The next prime is 686448157. The reversal of 686448147 is 741844686.

686448147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686448147 - 2¹² = 686444051 is a prime.

It is a super-2 number, since 2×686448147² = 942422117039467218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686448096 and 686448105.

It is not an unprimeable number, because it can be changed into a prime (686448107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55104 + ... + 66402.

It is an arithmetic number, because the mean of its divisors is an integer number (35798400).

Almost surely, 2^686448147 is an apocalyptic number.

686448147 is a deficient number, since it is larger than the sum of its proper divisors (459100653).

686448147 is a wasteful number, since it uses less digits than its factorization.

686448147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11583.

The product of its digits is 1032192, while the sum is 48.

The square root of 686448147 is about 26200.1554766379. The cubic root of 686448147 is about 882.1367440864.

The spelling of 686448147 in words is "six hundred eighty-six million, four hundred forty-eight thousand, one hundred forty-seven".