4066631 has 4 divisors (see below), whose sum is σ = 4071312. Its totient is φ = 4061952.

The previous prime is 4066619. The next prime is 4066661. The reversal of 4066631 is 1366604.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4066631 - 2⁶ = 4066567 is a prime.

It is a super-2 number, since 2×4066631² = 33074975380322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4066631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (1017828).

Almost surely, 2^4066631 is an apocalyptic number.

4066631 is a deficient number, since it is larger than the sum of its proper divisors (4681).

4066631 is a wasteful number, since it uses less digits than its factorization.

4066631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 4066631 is about 2016.5889516706. The cubic root of 4066631 is about 159.6166735093.

The spelling of 4066631 in words is "four million, sixty-six thousand, six hundred thirty-one".