2685620 has 24 divisors (see below), whose sum is σ = 6445824. Its totient is φ = 920736.

The previous prime is 2685607. The next prime is 2685629. The reversal of 2685620 is 265862.

It is a Cunningham number, because it is equal to 139³+1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9452 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (268576).

2^2685620 is an apocalyptic number.

2685620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685620 is an abundant number, since it is smaller than the sum of its proper divisors (3760204).

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

2685620 is a wasteful number, since it uses less digits than its factorization.

2685620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19199 (or 19197 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2685620 is about 1638.7861361386. The cubic root of 2685620 is about 139.0000172524. Note that the first 4 decimals are identical.

The spelling of 2685620 in words is "two million, six hundred eighty-five thousand, six hundred twenty".