2775965 has 8 divisors (see below), whose sum is σ = 3345408. Its totient is φ = 2211280.

The previous prime is 2775959. The next prime is 2775989. The reversal of 2775965 is 5695772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2775965 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 260 + ... + 2370.

It is an arithmetic number, because the mean of its divisors is an integer number (418176).

2^2775965 is an apocalyptic number.

It is an amenable number.

2775965 is a deficient number, since it is larger than the sum of its proper divisors (569443).

2775965 is a wasteful number, since it uses less digits than its factorization.

2775965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379.

The product of its digits is 132300, while the sum is 41.

The square root of 2775965 is about 1666.1227445780. The cubic root of 2775965 is about 140.5415251094.

The spelling of 2775965 in words is "two million, seven hundred seventy-five thousand, nine hundred sixty-five".