3802765 has 4 divisors (see below), whose sum is σ = 4563324. Its totient is φ = 3042208.

The previous prime is 3802763. The next prime is 3802769. The reversal of 3802765 is 5672083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5672083 = 59 ⋅96137.

It can be written as a sum of positive squares in 2 ways, for example, as 2996361 + 806404 = 1731^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 3802765 - 2¹ = 3802763 is a prime.

It is a super-2 number, since 2×3802765² = 28922043290450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3802763) 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, 380272 + ... + 380281.

It is an arithmetic number, because the mean of its divisors is an integer number (1140831).

Almost surely, 2^3802765 is an apocalyptic number.

It is an amenable number.

3802765 is a deficient number, since it is larger than the sum of its proper divisors (760559).

3802765 is an equidigital number, since it uses as much as digits as its factorization.

3802765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760558.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 3802765 is about 1950.0679475341. The cubic root of 3802765 is about 156.0869146395.

The spelling of 3802765 in words is "three million, eight hundred two thousand, seven hundred sixty-five".