686217152 has 14 divisors (see below), whose sum is σ = 1361712288. Its totient is φ = 343108544.

The previous prime is 686217089. The next prime is 686217193. The reversal of 686217152 is 251712686.

686217152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686217152² = 941787959397982208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5361008 + ... + 5361135.

Almost surely, 2^686217152 is an apocalyptic number.

It is an amenable number.

686217152 is a deficient number, since it is larger than the sum of its proper divisors (675495136).

686217152 is a wasteful number, since it uses less digits than its factorization.

686217152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722155 (or 10722145 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 686217152 is about 26195.7468303540. The cubic root of 686217152 is about 882.0377844204.

The spelling of 686217152 in words is "six hundred eighty-six million, two hundred seventeen thousand, one hundred fifty-two".