4006631 has 6 divisors (see below), whose sum is σ = 4079232. Its totient is φ = 3935300.

The previous prime is 4006621. The next prime is 4006633. The reversal of 4006631 is 1366004.

It is not a de Polignac number, because 4006631 - 2⁶ = 4006567 is a prime.

It is a super-2 number, since 2×4006631² = 32106183940322, 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 (4006633) 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 5 ways as a sum of consecutive naturals, for example, 2906 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (679872).

Almost surely, 2^4006631 is an apocalyptic number.

4006631 is a deficient number, since it is larger than the sum of its proper divisors (72601).

4006631 is an equidigital number, since it uses as much as digits as its factorization.

4006631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 4006631 is about 2001.6570635351. The cubic root of 4006631 is about 158.8277739068.

The spelling of 4006631 in words is "four million, six thousand, six hundred thirty-one".