685266233 has 8 divisors (see below), whose sum is σ = 705428808. Its totient is φ = 665190144.

The previous prime is 685266223. The next prime is 685266341. The reversal of 685266233 is 332662586.

It can be written as a sum of positive squares in 4 ways, for example, as 17405584 + 667860649 = 4172^2 + 25843^2 .

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

It is not a de Polignac number, because 685266233 - 2¹⁰ = 685265209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (685266223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5366 + ... + 37407.

It is an arithmetic number, because the mean of its divisors is an integer number (88178601).

Almost surely, 2^685266233 is an apocalyptic number.

It is an amenable number.

685266233 is a deficient number, since it is larger than the sum of its proper divisors (20162575).

685266233 is a wasteful number, since it uses less digits than its factorization.

685266233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43243.

The product of its digits is 311040, while the sum is 41.

The square root of 685266233 is about 26177.5902825298. The cubic root of 685266233 is about 881.6301708769.

The spelling of 685266233 in words is "six hundred eighty-five million, two hundred sixty-six thousand, two hundred thirty-three".