5645631 has 8 divisors (see below), whose sum is σ = 7539840. Its totient is φ = 3757592.

The previous prime is 5645623. The next prime is 5645639. The reversal of 5645631 is 1365465.

It is an interprime number because it is at equal distance from previous prime (5645623) and next prime (5645639).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5645631 - 2³ = 5645623 is a prime.

It is a super-2 number, since 2×5645631² = 63746298776322, which contains 22 as substring.

5645631 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645639) 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 in 7 ways as a sum of consecutive naturals, for example, 1396 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (942480).

Almost surely, 2^5645631 is an apocalyptic number.

5645631 is a deficient number, since it is larger than the sum of its proper divisors (1894209).

5645631 is a wasteful number, since it uses less digits than its factorization.

5645631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085.

The product of its digits is 10800, while the sum is 30.

The square root of 5645631 is about 2376.0536610102. The cubic root of 5645631 is about 178.0618288766.

The spelling of 5645631 in words is "five million, six hundred forty-five thousand, six hundred thirty-one".