2660965 has 4 divisors (see below), whose sum is σ = 3193164. Its totient is φ = 2128768.

The previous prime is 2660963. The next prime is 2660989. The reversal of 2660965 is 5690662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1985281 + 675684 = 1409^2 + 822^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660965 - 2¹ = 2660963 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 2660965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660963) 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, 266092 + ... + 266101.

It is an arithmetic number, because the mean of its divisors is an integer number (798291).

2^2660965 is an apocalyptic number.

It is an amenable number.

2660965 is a deficient number, since it is larger than the sum of its proper divisors (532199).

2660965 is an equidigital number, since it uses as much as digits as its factorization.

2660965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532198.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2660965 is about 1631.2464559348. The cubic root of 2660965 is about 138.5733514757.

It can be divided in two parts, 26 and 60965, that multiplied together give a triangular number (1585090 = T₁₇₈₀).

The spelling of 2660965 in words is "two million, six hundred sixty thousand, nine hundred sixty-five".