2685583640 has 32 divisors (see below), whose sum is σ = 6189946560. Its totient is φ = 1048032000.

The previous prime is 2685583639. The next prime is 2685583669. The reversal of 2685583640 is 463855862.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817136 + ... + 820415.

It is an arithmetic number, because the mean of its divisors is an integer number (193435830).

Almost surely, 2^2685583640 is an apocalyptic number.

2685583640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685583640 is an abundant number, since it is smaller than the sum of its proper divisors (3504362920).

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

2685583640 is a wasteful number, since it uses less digits than its factorization.

2685583640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637603 (or 1637599 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The square root of 2685583640 is about 51822.6170701558. The cubic root of 2685583640 is about 1389.9938995298.

The spelling of 2685583640 in words is "two billion, six hundred eighty-five million, five hundred eighty-three thousand, six hundred forty".