686447325 has 24 divisors (see below), whose sum is σ = 1261030400. Its totient is φ = 366104880.

The previous prime is 686447323. The next prime is 686447327. The reversal of 686447325 is 523744686.

It is an interprime number because it is at equal distance from previous prime (686447323) and next prime (686447327).

It is not a de Polignac number, because 686447325 - 2¹ = 686447323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686447323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 507805 + ... + 509154.

Almost surely, 2^686447325 is an apocalyptic number.

It is an amenable number.

686447325 is a deficient number, since it is larger than the sum of its proper divisors (574583075).

686447325 is a wasteful number, since it uses less digits than its factorization.

686447325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016978 (or 1016967 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 686447325 is about 26200.1397897034. The cubic root of 686447325 is about 882.1363919760.

The spelling of 686447325 in words is "six hundred eighty-six million, four hundred forty-seven thousand, three hundred twenty-five".