3997065 has 16 divisors (see below), whose sum is σ = 6545088. Its totient is φ = 2081856.

The previous prime is 3997061. The next prime is 3997069. The reversal of 3997065 is 5607993.

It is an interprime number because it is at equal distance from previous prime (3997061) and next prime (3997069).

It is not a de Polignac number, because 3997065 - 2² = 3997061 is a prime.

It is a super-2 number, since 2×3997065² = 31953057228450, which contains 22 as substring.

3997065 is a lucky 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 in 15 ways as a sum of consecutive naturals, for example, 2454 + ... + 3743.

It is an arithmetic number, because the mean of its divisors is an integer number (409068).

Almost surely, 2^3997065 is an apocalyptic number.

It is an amenable number.

3997065 is a deficient number, since it is larger than the sum of its proper divisors (2548023).

3997065 is a wasteful number, since it uses less digits than its factorization.

3997065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 3997065 is about 1999.2661153533. The cubic root of 3997065 is about 158.7012705129.

The spelling of 3997065 in words is "three million, nine hundred ninety-seven thousand, sixty-five".