2685272640 has 56 divisors (see below), whose sum is σ = 8525743680. Its totient is φ = 716072448.

The previous prime is 2685272599. The next prime is 2685272651. The reversal of 2685272640 is 462725862.

It is a super-2 number, since 2×2685272640² = 14421378302265139200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2685272592 and 2685272601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397620 + ... + 1399539.

Almost surely, 2^2685272640 is an apocalyptic number.

2685272640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685272640 is an abundant number, since it is smaller than the sum of its proper divisors (5840471040).

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

2685272640 is a wasteful number, since it uses less digits than its factorization.

2685272640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797179 (or 2797169 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 2685272640 is about 51819.6163629180. The cubic root of 2685272640 is about 1389.9402420698.

The spelling of 2685272640 in words is "two billion, six hundred eighty-five million, two hundred seventy-two thousand, six hundred forty".