2775798 has 12 divisors (see below), whose sum is σ = 6014268. Its totient is φ = 925260.

The previous prime is 2775781. The next prime is 2775841. The reversal of 2775798 is 8975772.

2775798 is a `hidden beast` number, since 2 + 77 + 579 + 8 = 666.

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 5 ways as a sum of consecutive naturals, for example, 77088 + ... + 77123.

It is an arithmetic number, because the mean of its divisors is an integer number (501189).

2^2775798 is an apocalyptic number.

2775798 is an abundant number, since it is smaller than the sum of its proper divisors (3238470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2775798 is a wasteful number, since it uses less digits than its factorization.

2775798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154219 (or 154216 counting only the distinct ones).

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

The square root of 2775798 is about 1666.0726274686. The cubic root of 2775798 is about 140.5387067615.

The spelling of 2775798 in words is "two million, seven hundred seventy-five thousand, seven hundred ninety-eight".