685610358 has 32 divisors (see below), whose sum is σ = 1432947456. Its totient is φ = 218278368.

The previous prime is 685610351. The next prime is 685610399. The reversal of 685610358 is 853016586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685610351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101185 + ... + 107747.

It is an arithmetic number, because the mean of its divisors is an integer number (44779608).

Almost surely, 2^685610358 is an apocalyptic number.

685610358 is an abundant number, since it is smaller than the sum of its proper divisors (747337098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685610358 is a wasteful number, since it uses less digits than its factorization.

685610358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 685610358 is about 26184.1623505508. The cubic root of 685610358 is about 881.7777243370. Note that the first 4 decimals are identical.

The spelling of 685610358 in words is "six hundred eighty-five million, six hundred ten thousand, three hundred fifty-eight".