4080685820 has 24 divisors (see below), whose sum is σ = 8594883024. Its totient is φ = 1627428096.

The previous prime is 4080685811. The next prime is 4080685883. The reversal of 4080685820 is 285860804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295982 + ... + 309461.

It is an arithmetic number, because the mean of its divisors is an integer number (358120126).

Almost surely, 2^4080685820 is an apocalyptic number.

It is an amenable number.

4080685820 is an abundant number, since it is smaller than the sum of its proper divisors (4514197204).

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

4080685820 is a wasteful number, since it uses less digits than its factorization.

4080685820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605789 (or 605787 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 4080685820 is about 63880.2459293951. The cubic root of 4080685820 is about 1598.0034758642.

The spelling of 4080685820 in words is "four billion, eighty million, six hundred eighty-five thousand, eight hundred twenty".