685947749586 has 48 divisors (see below), whose sum is σ = 1508242522752. Its totient is φ = 207822804640.

The previous prime is 685947749569. The next prime is 685947749587.

685947749586 is nontrivially palindromic in base 10.

685947749586 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (685947749587) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3783175 + ... + 3960341.

It is an arithmetic number, because the mean of its divisors is an integer number (31421719224).

Almost surely, 2^685947749586 is an apocalyptic number.

685947749586 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

685947749586 is an abundant number, since it is smaller than the sum of its proper divisors (822294773166).

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

685947749586 is a wasteful number, since it uses less digits than its factorization.

685947749586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182527 (or 182516 counting only the distinct ones).

The product of its digits is 3657830400, while the sum is 78.

The spelling of 685947749586 in words is "six hundred eighty-five billion, nine hundred forty-seven million, seven hundred forty-nine thousand, five hundred eighty-six".