2785491 has 12 divisors (see below), whose sum is σ = 4056832. Its totient is φ = 1841616.

The previous prime is 2785487. The next prime is 2785511. The reversal of 2785491 is 1945872.

It is not a de Polignac number, because 2785491 - 2² = 2785487 is a prime.

It is a super-2 number, since 2×2785491² = 15517920222162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2785451) 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, 76 + ... + 2361.

2^2785491 is an apocalyptic number.

2785491 is a deficient number, since it is larger than the sum of its proper divisors (1271341).

2785491 is a wasteful number, since it uses less digits than its factorization.

2785491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 2567 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2785491 is about 1668.9790292271. The cubic root of 2785491 is about 140.7021023110.

The spelling of 2785491 in words is "two million, seven hundred eighty-five thousand, four hundred ninety-one".