2797765 has 8 divisors (see below), whose sum is σ = 3412728. Its totient is φ = 2201280.

The previous prime is 2797757. The next prime is 2797783. The reversal of 2797765 is 5677972.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 231361 + 2566404 = 481^2 + 1602^2 .

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

It is not a de Polignac number, because 2797765 - 2³ = 2797757 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 7⁴ + 9² + 7⁵ + 7⁷ + 6⁴ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4282 + ... + 4891.

It is an arithmetic number, because the mean of its divisors is an integer number (426591).

2^2797765 is an apocalyptic number.

It is an amenable number.

2797765 is a deficient number, since it is larger than the sum of its proper divisors (614963).

2797765 is an equidigital number, since it uses as much as digits as its factorization.

2797765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9239.

The product of its digits is 185220, while the sum is 43.

The square root of 2797765 is about 1672.6520857608. The cubic root of 2797765 is about 140.9084629619.

The spelling of 2797765 in words is "two million, seven hundred ninety-seven thousand, seven hundred sixty-five".