2685653 has 2 divisors, whose sum is σ = 2685654. Its totient is φ = 2685652.

The previous prime is 2685649. The next prime is 2685667. The reversal of 2685653 is 3565862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 786769 = 1378^2 + 887^2 .

It is a cyclic number.

It is not a de Polignac number, because 2685653 - 2² = 2685649 is a prime.

It is a super-3 number, since 3×2685653³ = 58112686295333820231, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 6³ + 8⁷ + 5 + 6⁷ + 5³ + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685673) by changing a digit.

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 as a sum of consecutive naturals, namely, 1342826 + 1342827.

It is an arithmetic number, because the mean of its divisors is an integer number (1342827).

2^2685653 is an apocalyptic number.

It is an amenable number.

2685653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685653 is an equidigital number, since it uses as much as digits as its factorization.

2685653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 2685653 is about 1638.7962045355. The cubic root of 2685653 is about 139.0005865786. Note that the first 3 decimals are identical.

The spelling of 2685653 in words is "two million, six hundred eighty-five thousand, six hundred fifty-three".