5635861 has 16 divisors (see below), whose sum is σ = 7164288. Its totient is φ = 4305600.

The previous prime is 5635853. The next prime is 5635871. The reversal of 5635861 is 1685365.

It is a cyclic number.

It is not a de Polignac number, because 5635861 - 2³ = 5635853 is a prime.

It is a super-2 number, since 2×5635861² = 63525858422642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5635801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3391 + ... + 4771.

It is an arithmetic number, because the mean of its divisors is an integer number (447768).

Almost surely, 2^5635861 is an apocalyptic number.

It is an amenable number.

5635861 is a deficient number, since it is larger than the sum of its proper divisors (1528427).

5635861 is a wasteful number, since it uses less digits than its factorization.

5635861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its digits is 21600, while the sum is 34.

The square root of 5635861 is about 2373.9968407730. The cubic root of 5635861 is about 177.9590550943.

The spelling of 5635861 in words is "five million, six hundred thirty-five thousand, eight hundred sixty-one".