685512830 has 8 divisors (see below), whose sum is σ = 1233923112. Its totient is φ = 274205128.

The previous prime is 685512823. The next prime is 685512847. The reversal of 685512830 is 38215586.

685512830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34275632 + ... + 34275651.

It is an arithmetic number, because the mean of its divisors is an integer number (154240389).

Almost surely, 2^685512830 is an apocalyptic number.

685512830 is a deficient number, since it is larger than the sum of its proper divisors (548410282).

685512830 is a wasteful number, since it uses less digits than its factorization.

685512830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68551290.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 685512830 is about 26182.2999371713. The cubic root of 685512830 is about 881.7359114254.

The spelling of 685512830 in words is "six hundred eighty-five million, five hundred twelve thousand, eight hundred thirty".