686277652 has 6 divisors (see below), whose sum is σ = 1200985898. Its totient is φ = 343138824.

The previous prime is 686277643. The next prime is 686277667. The reversal of 686277652 is 256772686.

It can be written as a sum of positive squares in only one way, i.e., 520022416 + 166255236 = 22804^2 + 12894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 686277596 and 686277605.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 85784703 + ... + 85784710.

Almost surely, 2^686277652 is an apocalyptic number.

It is an amenable number.

686277652 is a deficient number, since it is larger than the sum of its proper divisors (514708246).

686277652 is a wasteful number, since it uses less digits than its factorization.

686277652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171569417 (or 171569415 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The square root of 686277652 is about 26196.9015725143. The cubic root of 686277652 is about 882.0637051354.

The spelling of 686277652 in words is "six hundred eighty-six million, two hundred seventy-seven thousand, six hundred fifty-two".