3965671 has 4 divisors (see below), whose sum is σ = 4030744. Its totient is φ = 3900600.

The previous prime is 3965659. The next prime is 3965681. The reversal of 3965671 is 1765693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1765693 = 59 ⋅29927.

It is a cyclic number.

It is not a de Polignac number, because 3965671 - 2⁵ = 3965639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3965671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32445 + ... + 32566.

It is an arithmetic number, because the mean of its divisors is an integer number (1007686).

Almost surely, 2^3965671 is an apocalyptic number.

3965671 is a deficient number, since it is larger than the sum of its proper divisors (65073).

3965671 is an equidigital number, since it uses as much as digits as its factorization.

3965671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65072.

The product of its digits is 34020, while the sum is 37.

The square root of 3965671 is about 1991.3992568041. The cubic root of 3965671 is about 158.2846840995.

The spelling of 3965671 in words is "three million, nine hundred sixty-five thousand, six hundred seventy-one".