3765961 has 4 divisors (see below), whose sum is σ = 3773952. Its totient is φ = 3757972.

The previous prime is 3765941. The next prime is 3765967. The reversal of 3765961 is 1695673.

3765961 = T₁₅₈₃ + T₁₅₈₄ + T₁₅₈₅.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3765961 - 2⁷ = 3765833 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 3765961.

It is not an unprimeable number, because it can be changed into a prime (3765967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3241 + ... + 4246.

It is an arithmetic number, because the mean of its divisors is an integer number (943488).

Almost surely, 2^3765961 is an apocalyptic number.

3765961 is the 1585-th centered triangular number.

It is an amenable number.

3765961 is a deficient number, since it is larger than the sum of its proper divisors (7991).

3765961 is an equidigital number, since it uses as much as digits as its factorization.

3765961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990.

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

The square root of 3765961 is about 1940.6084097520. The cubic root of 3765961 is about 155.5817334817.

The spelling of 3765961 in words is "three million, seven hundred sixty-five thousand, nine hundred sixty-one".