2685636416 has 28 divisors (see below), whose sum is σ = 5473349988. Its totient is φ = 1306524672.

The previous prime is 2685636409. The next prime is 2685636427. The reversal of 2685636416 is 6146365862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1004636416 + 1681000000 = 31696^2 + 41000^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564701 + ... + 569436.

Almost surely, 2^2685636416 is an apocalyptic number.

It is an amenable number.

2685636416 is an abundant number, since it is smaller than the sum of its proper divisors (2787713572).

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

2685636416 is a wasteful number, since it uses less digits than its factorization.

2685636416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134186 (or 1134176 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 47.

The square root of 2685636416 is about 51823.1262661758. The cubic root of 2685636416 is about 1390.0030046689.

The spelling of 2685636416 in words is "two billion, six hundred eighty-five million, six hundred thirty-six thousand, four hundred sixteen".