2872985 has 4 divisors (see below), whose sum is σ = 3447588. Its totient is φ = 2298384.

The previous prime is 2872981. The next prime is 2872997. The reversal of 2872985 is 5892782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 1413721 = 1208^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2872985 - 2² = 2872981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2872981) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 287294 + ... + 287303.

It is an arithmetic number, because the mean of its divisors is an integer number (861897).

2^2872985 is an apocalyptic number.

It is an amenable number.

2872985 is a deficient number, since it is larger than the sum of its proper divisors (574603).

2872985 is an equidigital number, since it uses as much as digits as its factorization.

2872985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574602.

The product of its digits is 80640, while the sum is 41.

The square root of 2872985 is about 1694.9882005489. The cubic root of 2872985 is about 142.1601215651.

The spelling of 2872985 in words is "two million, eight hundred seventy-two thousand, nine hundred eighty-five".