685266243 has 8 divisors (see below), whose sum is σ = 967434768. Its totient is φ = 429970944.

The previous prime is 685266223. The next prime is 685266341. The reversal of 685266243 is 342662586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 685266243 - 2¹⁰ = 685265219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 685266195 and 685266204.

It is not an unprimeable number, because it can be changed into a prime (685266223) 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 7 ways as a sum of consecutive naturals, for example, 6718246 + ... + 6718347.

It is an arithmetic number, because the mean of its divisors is an integer number (120929346).

Almost surely, 2^685266243 is an apocalyptic number.

685266243 is a deficient number, since it is larger than the sum of its proper divisors (282168525).

685266243 is a wasteful number, since it uses less digits than its factorization.

685266243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436613.

The product of its digits is 414720, while the sum is 42.

The square root of 685266243 is about 26177.5904735329. The cubic root of 685266243 is about 881.6301751654.

The spelling of 685266243 in words is "six hundred eighty-five million, two hundred sixty-six thousand, two hundred forty-three".