685458102 has 16 divisors (see below), whose sum is σ = 1566761472. Its totient is φ = 195845160.

The previous prime is 685458091. The next prime is 685458107. The reversal of 685458102 is 201854586.

685458102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685458107) 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, 8160174 + ... + 8160257.

It is an arithmetic number, because the mean of its divisors is an integer number (97922592).

Almost surely, 2^685458102 is an apocalyptic number.

685458102 is an abundant number, since it is smaller than the sum of its proper divisors (881303370).

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

685458102 is a wasteful number, since it uses less digits than its factorization.

685458102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16320443.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 685458102 is about 26181.2547827639. The cubic root of 685458102 is about 881.7124463031.

The spelling of 685458102 in words is "six hundred eighty-five million, four hundred fifty-eight thousand, one hundred two".