2685634420 has 48 divisors (see below), whose sum is σ = 6784767360. Its totient is φ = 872325504.

The previous prime is 2685634411. The next prime is 2685634447. The reversal of 2685634420 is 244365862.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502159 + ... + 507478.

It is an arithmetic number, because the mean of its divisors is an integer number (141349320).

Almost surely, 2^2685634420 is an apocalyptic number.

2685634420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685634420 is an abundant number, since it is smaller than the sum of its proper divisors (4099132940).

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

2685634420 is a wasteful number, since it uses less digits than its factorization.

2685634420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009672 (or 1009670 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The square root of 2685634420 is about 51823.1070083607. The cubic root of 2685634420 is about 1390.0026603127.

The spelling of 2685634420 in words is "two billion, six hundred eighty-five million, six hundred thirty-four thousand, four hundred twenty".