2780995 has 12 divisors (see below), whose sum is σ = 3882384. Its totient is φ = 1906800.

The previous prime is 2780993. The next prime is 2781001. The reversal of 2780995 is 5990872.

2780995 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2780995 - 2¹ = 2780993 is a prime.

It is a Duffinian number.

2780995 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (2780993) 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, 5431 + ... + 5920.

It is an arithmetic number, because the mean of its divisors is an integer number (323532).

2^2780995 is an apocalyptic number.

2780995 is a deficient number, since it is larger than the sum of its proper divisors (1101389).

2780995 is a wasteful number, since it uses less digits than its factorization.

2780995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11370 (or 11363 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 2780995 is about 1667.6315540310. The cubic root of 2780995 is about 140.6263601515.

The spelling of 2780995 in words is "two million, seven hundred eighty thousand, nine hundred ninety-five".