3965775 has 72 divisors (see below), whose sum is σ = 7916160. Its totient is φ = 1742400.

The previous prime is 3965723. The next prime is 3965783. The reversal of 3965775 is 5775693.

It is not a de Polignac number, because 3965775 - 2¹⁴ = 3949391 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 172414 + ... + 172436.

Almost surely, 2^3965775 is an apocalyptic number.

3965775 is a deficient number, since it is larger than the sum of its proper divisors (3950385).

3965775 is a wasteful number, since it uses less digits than its factorization.

3965775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 61 counting only the distinct ones).

The product of its digits is 198450, while the sum is 42.

The square root of 3965775 is about 1991.4253689255. The cubic root of 3965775 is about 158.2860677631.

The spelling of 3965775 in words is "three million, nine hundred sixty-five thousand, seven hundred seventy-five".