4006667 has 8 divisors (see below), whose sum is σ = 4647936. Its totient is φ = 3382632.

The previous prime is 4006661. The next prime is 4006687. The reversal of 4006667 is 7666004.

4006667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4006667 - 2⁶ = 4006603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4006661) 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 7 ways as a sum of consecutive naturals, for example, 3803 + ... + 4740.

It is an arithmetic number, because the mean of its divisors is an integer number (580992).

Almost surely, 2^4006667 is an apocalyptic number.

4006667 is a deficient number, since it is larger than the sum of its proper divisors (641269).

4006667 is an equidigital number, since it uses as much as digits as its factorization.

4006667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 4006667 is about 2001.6660560643. Note that the first 3 decimals coincide. The cubic root of 4006667 is about 158.8282496002.

The spelling of 4006667 in words is "four million, six thousand, six hundred sixty-seven".