685258427 has 8 divisors (see below), whose sum is σ = 824371200. Its totient is φ = 556450344.

The previous prime is 685258411. The next prime is 685258447. The reversal of 685258427 is 724852586.

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

It is a cyclic number.

It is not a de Polignac number, because 685258427 - 2⁴ = 685258411 is a prime.

It is a super-3 number, since 3×685258427³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685258447) 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, 2576027 + ... + 2576292.

It is an arithmetic number, because the mean of its divisors is an integer number (103046400).

Almost surely, 2^685258427 is an apocalyptic number.

685258427 is a deficient number, since it is larger than the sum of its proper divisors (139112773).

685258427 is a wasteful number, since it uses less digits than its factorization.

685258427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152345.

The product of its digits is 1075200, while the sum is 47.

The square root of 685258427 is about 26177.4411851120. The cubic root of 685258427 is about 881.6268232577.

The spelling of 685258427 in words is "six hundred eighty-five million, two hundred fifty-eight thousand, four hundred twenty-seven".