5633661 has 16 divisors (see below), whose sum is σ = 8460288. Its totient is φ = 3303600.

The previous prime is 5633651. The next prime is 5633699. The reversal of 5633661 is 1663365.

It is not a de Polignac number, because 5633661 - 2⁹ = 5633149 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5633651) 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, 1731 + ... + 3776.

It is an arithmetic number, because the mean of its divisors is an integer number (528768).

Almost surely, 2^5633661 is an apocalyptic number.

It is an amenable number.

5633661 is a deficient number, since it is larger than the sum of its proper divisors (2826627).

5633661 is a wasteful number, since it uses less digits than its factorization.

5633661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552.

The product of its digits is 9720, while the sum is 30.

The square root of 5633661 is about 2373.5334419384. The cubic root of 5633661 is about 177.9358962031.

It can be divided in two parts, 563 and 3661, that added together give a palindrome (4224).

The spelling of 5633661 in words is "five million, six hundred thirty-three thousand, six hundred sixty-one".