2605878 has 64 divisors (see below), whose sum is σ = 6531840. Its totient is φ = 763200.

The previous prime is 2605871. The next prime is 2605909. The reversal of 2605878 is 8785062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24301 + ... + 24407.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2^2605878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2605878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3265920).

2605878 is an abundant number, since it is smaller than the sum of its proper divisors (3925962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2605878 is a wasteful number, since it uses less digits than its factorization.

2605878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2605878 is about 1614.2732110767. The cubic root of 2605878 is about 137.6104324950.

The spelling of 2605878 in words is "two million, six hundred five thousand, eight hundred seventy-eight".