5642631 has 6 divisors (see below), whose sum is σ = 8150480. Its totient is φ = 3761748.

The previous prime is 5642629. The next prime is 5642633. The reversal of 5642631 is 1362465.

It is an interprime number because it is at equal distance from previous prime (5642629) and next prime (5642633).

It is not a de Polignac number, because 5642631 - 2¹ = 5642629 is a prime.

It is a super-2 number, since 2×5642631² = 63678569204322, which contains 22 as substring.

It is a Duffinian number.

5642631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5642595 and 5642604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 313471 + ... + 313488.

Almost surely, 2^5642631 is an apocalyptic number.

5642631 is a deficient number, since it is larger than the sum of its proper divisors (2507849).

5642631 is a wasteful number, since it uses less digits than its factorization.

5642631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626965 (or 626962 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 5642631 is about 2375.4222782486. The cubic root of 5642631 is about 178.0302835316.

The spelling of 5642631 in words is "five million, six hundred forty-two thousand, six hundred thirty-one".