2785645 has 8 divisors (see below), whose sum is σ = 3488256. Its totient is φ = 2131536.

The previous prime is 2785639. The next prime is 2785649. The reversal of 2785645 is 5465872.

It is a happy number.

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 2785645 - 2⁵ = 2785613 is a prime.

It is a super-3 number, since 3×2785645³ = 64848295189596633375, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2⁸ + 7⁷ + 8² + 5⁴ + 6⁵ + 4⁴ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11997 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (436032).

2^2785645 is an apocalyptic number.

It is an amenable number.

2785645 is a deficient number, since it is larger than the sum of its proper divisors (702611).

2785645 is a wasteful number, since it uses less digits than its factorization.

2785645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24251.

The product of its digits is 67200, while the sum is 37.

The square root of 2785645 is about 1669.0251645796. The cubic root of 2785645 is about 140.7046952380.

The spelling of 2785645 in words is "two million, seven hundred eighty-five thousand, six hundred forty-five".