686533248 has 48 divisors (see below), whose sum is σ = 1975574250. Its totient is φ = 228844032.

The previous prime is 686533247. The next prime is 686533249. The reversal of 686533248 is 842335686.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (686533247) and next prime (686533249).

It can be written as a sum of positive squares in only one way, i.e., 595750464 + 90782784 = 24408^2 + 9528^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (686533241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 296823 + ... + 299126.

Almost surely, 2^686533248 is an apocalyptic number.

It is an amenable number.

686533248 is an abundant number, since it is smaller than the sum of its proper divisors (1289041002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686533248 is a wasteful number, since it uses less digits than its factorization.

686533248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595969 (or 595954 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 686533248 is about 26201.7794815543. The cubic root of 686533248 is about 882.1731962775.

The spelling of 686533248 in words is "six hundred eighty-six million, five hundred thirty-three thousand, two hundred forty-eight".