3666997 has 8 divisors (see below), whose sum is σ = 3792096. Its totient is φ = 3543792.

The previous prime is 3666991. The next prime is 3667003. The reversal of 3666997 is 7996663.

It is an interprime number because it is at equal distance from previous prime (3666991) and next prime (3667003).

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 3666997 - 2¹⁹ = 3142709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666991) 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, 4203 + ... + 4999.

It is an arithmetic number, because the mean of its divisors is an integer number (474012).

Almost surely, 2^3666997 is an apocalyptic number.

It is an amenable number.

3666997 is a deficient number, since it is larger than the sum of its proper divisors (125099).

3666997 is a wasteful number, since it uses less digits than its factorization.

3666997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947.

The product of its digits is 367416, while the sum is 46.

The square root of 3666997 is about 1914.9404690486. The cubic root of 3666997 is about 154.2067975715.

The spelling of 3666997 in words is "three million, six hundred sixty-six thousand, nine hundred ninety-seven".