686465216 has 14 divisors (see below), whose sum is σ = 1362204540. Its totient is φ = 343232576.

The previous prime is 686465189. The next prime is 686465239. The reversal of 686465216 is 612564686.

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 as a sum of consecutive naturals, namely, 5362946 + ... + 5363073.

Almost surely, 2^686465216 is an apocalyptic number.

It is an amenable number.

686465216 is a deficient number, since it is larger than the sum of its proper divisors (675739324).

686465216 is a wasteful number, since it uses less digits than its factorization.

686465216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10726031 (or 10726021 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 686465216 is about 26200.4812169548. The cubic root of 686465216 is about 882.1440556692.

The spelling of 686465216 in words is "six hundred eighty-six million, four hundred sixty-five thousand, two hundred sixteen".