685315102 has 8 divisors (see below), whose sum is σ = 1028176776. Its totient is φ = 342589512.

The previous prime is 685315097. The next prime is 685315121. The reversal of 685315102 is 201513586.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20328 + ... + 42235.

It is an arithmetic number, because the mean of its divisors is an integer number (128522097).

Almost surely, 2^685315102 is an apocalyptic number.

685315102 is a deficient number, since it is larger than the sum of its proper divisors (342861674).

685315102 is a wasteful number, since it uses less digits than its factorization.

685315102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68042.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 685315102 is about 26178.5236787715. The cubic root of 685315102 is about 881.6511278707.

Adding to 685315102 its reverse (201513586), we get a palindrome (886828688).

The spelling of 685315102 in words is "six hundred eighty-five million, three hundred fifteen thousand, one hundred two".