686299552 has 24 divisors (see below), whose sum is σ = 1356306336. Its totient is φ = 341840832.

The previous prime is 686299543. The next prime is 686299577. The reversal of 686299552 is 255992686.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 686299552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32358 + ... + 49189.

It is an arithmetic number, because the mean of its divisors is an integer number (56512764).

Almost surely, 2^686299552 is an apocalyptic number.

It is an amenable number.

686299552 is a deficient number, since it is larger than the sum of its proper divisors (670006784).

686299552 is a wasteful number, since it uses less digits than its factorization.

686299552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81820 (or 81812 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 52.

The square root of 686299552 is about 26197.3195575425. The cubic root of 686299552 is about 882.0730876303.

The spelling of 686299552 in words is "six hundred eighty-six million, two hundred ninety-nine thousand, five hundred fifty-two".