5651685 has 24 divisors (see below), whose sum is σ = 10550904. Its totient is φ = 2782080.

The previous prime is 5651623. The next prime is 5651707. The reversal of 5651685 is 5861565.

5651685 is a `hidden beast` number, since 565 + 16 + 85 = 666.

5651685 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 370881 + 5280804 = 609^2 + 2298^2 .

It is not a de Polignac number, because 5651685 - 2⁶ = 5651621 is a prime.

It is an Ulam number.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 4246 + ... + 5415.

It is an arithmetic number, because the mean of its divisors is an integer number (439621).

Almost surely, 2^5651685 is an apocalyptic number.

It is an amenable number.

5651685 is a deficient number, since it is larger than the sum of its proper divisors (4899219).

5651685 is a wasteful number, since it uses less digits than its factorization.

5651685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9685 (or 9682 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 5651685 is about 2377.3272807924. The cubic root of 5651685 is about 178.1254533691.

It can be divided in two parts, 5651 and 685, that added together give a palindrome (6336).

The spelling of 5651685 in words is "five million, six hundred fifty-one thousand, six hundred eighty-five".