2778085 has 8 divisors (see below), whose sum is σ = 3509280. Its totient is φ = 2105424.

The previous prime is 2778079. The next prime is 2778091. The reversal of 2778085 is 5808772.

It is an interprime number because it is at equal distance from previous prime (2778079) and next prime (2778091).

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

It is a cyclic number.

It is not a de Polignac number, because 2778085 - 2⁹ = 2777573 is a prime.

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, 14527 + ... + 14716.

It is an arithmetic number, because the mean of its divisors is an integer number (438660).

2^2778085 is an apocalyptic number.

It is an amenable number.

2778085 is a deficient number, since it is larger than the sum of its proper divisors (731195).

2778085 is a wasteful number, since it uses less digits than its factorization.

2778085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29267.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 2778085 is about 1666.7588307851. The cubic root of 2778085 is about 140.5772931177.

The spelling of 2778085 in words is "two million, seven hundred seventy-eight thousand, eighty-five".