3997066 has 4 divisors (see below), whose sum is σ = 5995602. Its totient is φ = 1998532.

The previous prime is 3997061. The next prime is 3997069. The reversal of 3997066 is 6607993.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 112225 = 1971^2 + 335^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3997061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999265 + ... + 999268.

Almost surely, 2^3997066 is an apocalyptic number.

3997066 is a deficient number, since it is larger than the sum of its proper divisors (1998536).

3997066 is a wasteful number, since it uses less digits than its factorization.

3997066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998535.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 3997066 is about 1999.2663654451. The cubic root of 3997066 is about 158.7012837477.

The spelling of 3997066 in words is "three million, nine hundred ninety-seven thousand, sixty-six".