2068686040 has 64 divisors (see below), whose sum is σ = 4714848000. Its totient is φ = 816806400.

The previous prime is 2068686031. The next prime is 2068686043. The reversal of 2068686040 is 406868602.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2068685984 and 2068686002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068686043) 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, 1934626 + ... + 1935694.

It is an arithmetic number, because the mean of its divisors is an integer number (73669500).

Almost surely, 2^2068686040 is an apocalyptic number.

2068686040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2068686040 is an abundant number, since it is smaller than the sum of its proper divisors (2646161960).

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

2068686040 is a wasteful number, since it uses less digits than its factorization.

2068686040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 2068686040 is about 45482.8103793070. The cubic root of 2068686040 is about 1274.1821827073.

The spelling of 2068686040 in words is "two billion, sixty-eight million, six hundred eighty-six thousand, forty".