2878659 has 20 divisors (see below), whose sum is σ = 4915504. Its totient is φ = 1644624.

The previous prime is 2878639. The next prime is 2878679. The reversal of 2878659 is 9568782.

It is an interprime number because it is at equal distance from previous prime (2878639) and next prime (2878679).

It is not a de Polignac number, because 2878659 - 2⁹ = 2878147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2878639) 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 19 ways as a sum of consecutive naturals, for example, 1972 + ... + 3105.

2^2878659 is an apocalyptic number.

2878659 is a deficient number, since it is larger than the sum of its proper divisors (2036845).

2878659 is an equidigital number, since it uses as much as digits as its factorization.

2878659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096 (or 5087 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2878659 is about 1696.6611329314. The cubic root of 2878659 is about 142.2536463721.

It can be divided in two parts, 28 and 78659, that added together give a palindrome (78687).

The spelling of 2878659 in words is "two million, eight hundred seventy-eight thousand, six hundred fifty-nine".