3967667 has 8 divisors (see below), whose sum is σ = 4370112. Its totient is φ = 3572200.

The previous prime is 3967651. The next prime is 3967669. The reversal of 3967667 is 7667693.

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 3967667 - 2⁴ = 3967651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3967669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509 + ... + 2862.

It is an arithmetic number, because the mean of its divisors is an integer number (546264).

Almost surely, 2^3967667 is an apocalyptic number.

3967667 is a deficient number, since it is larger than the sum of its proper divisors (402445).

3967667 is a wasteful number, since it uses less digits than its factorization.

3967667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489.

The product of its digits is 285768, while the sum is 44.

The square root of 3967667 is about 1991.9003489131. The cubic root of 3967667 is about 158.3112355741.

The spelling of 3967667 in words is "three million, nine hundred sixty-seven thousand, six hundred sixty-seven".