2878637 has 4 divisors (see below), whose sum is σ = 2956476. Its totient is φ = 2800800.

The previous prime is 2878613. The next prime is 2878639. The reversal of 2878637 is 7368782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7368782 = 2 ⋅3684391.

It can be written as a sum of positive squares in 2 ways, for example, as 2128681 + 749956 = 1459^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878637 - 2⁶ = 2878573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2878594 and 2878603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38864 + ... + 38937.

It is an arithmetic number, because the mean of its divisors is an integer number (739119).

2^2878637 is an apocalyptic number.

It is an amenable number.

2878637 is a deficient number, since it is larger than the sum of its proper divisors (77839).

2878637 is an equidigital number, since it uses as much as digits as its factorization.

2878637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77838.

The product of its digits is 112896, while the sum is 41.

The square root of 2878637 is about 1696.6546495973. The cubic root of 2878637 is about 142.2532839825.

The spelling of 2878637 in words is "two million, eight hundred seventy-eight thousand, six hundred thirty-seven".