3966765 has 32 divisors (see below), whose sum is σ = 7171200. Its totient is φ = 1854720.

The previous prime is 3966761. The next prime is 3966773. The reversal of 3966765 is 5676693.

It is not a de Polignac number, because 3966765 - 2² = 3966761 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4371 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (224100).

Almost surely, 2^3966765 is an apocalyptic number.

It is an amenable number.

3966765 is a deficient number, since it is larger than the sum of its proper divisors (3204435).

3966765 is a wasteful number, since it uses less digits than its factorization.

3966765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877.

The product of its digits is 204120, while the sum is 42.

The square root of 3966765 is about 1991.6739190942. The cubic root of 3966765 is about 158.2992379647.

The spelling of 3966765 in words is "three million, nine hundred sixty-six thousand, seven hundred sixty-five".