5631687 has 20 divisors (see below), whose sum is σ = 8476776. Its totient is φ = 3726000.

The previous prime is 5631683. The next prime is 5631697. The reversal of 5631687 is 7861365.

5631687 is a `hidden beast` number, since 563 + 16 + 87 = 666.

It is not a de Polignac number, because 5631687 - 2² = 5631683 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (30240) is a multiple of the sum of its prime factors (540).

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 (5631683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20193 + ... + 20469.

Almost surely, 2^5631687 is an apocalyptic number.

5631687 is a deficient number, since it is larger than the sum of its proper divisors (2845089).

5631687 is a wasteful number, since it uses less digits than its factorization.

5631687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 531 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 5631687 is about 2373.1175697803. The cubic root of 5631687 is about 177.9151112291.

The spelling of 5631687 in words is "five million, six hundred thirty-one thousand, six hundred eighty-seven".