2778795 has 12 divisors (see below), whose sum is σ = 4816656. Its totient is φ = 1482000.

The previous prime is 2778793. The next prime is 2778799. The reversal of 2778795 is 5978772.

It is not a de Polignac number, because 2778795 - 2¹ = 2778793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 61751 = 2778795 / (2 + 7 + 7 + 8 + 7 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2778795.

It is not an unprimeable number, because it can be changed into a prime (2778793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30831 + ... + 30920.

It is an arithmetic number, because the mean of its divisors is an integer number (401388).

2^2778795 is an apocalyptic number.

2778795 is a deficient number, since it is larger than the sum of its proper divisors (2037861).

2778795 is a wasteful number, since it uses less digits than its factorization.

2778795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61762 (or 61759 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 2778795 is about 1666.9718054004. The cubic root of 2778795 is about 140.5892679585.

The spelling of 2778795 in words is "two million, seven hundred seventy-eight thousand, seven hundred ninety-five".