2658870 has 48 divisors (see below), whose sum is σ = 7143552. Its totient is φ = 685440.

The previous prime is 2658863. The next prime is 2658871. The reversal of 2658870 is 788562.

2658870 is a `hidden beast` number, since 2 + 6 + 588 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2314 + ... + 3266.

It is an arithmetic number, because the mean of its divisors is an integer number (148824).

2^2658870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2658870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3571776).

2658870 is an abundant number, since it is smaller than the sum of its proper divisors (4484682).

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

2658870 is a wasteful number, since it uses less digits than its factorization.

2658870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 994 counting only the distinct ones).

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

The square root of 2658870 is about 1630.6041825041. The cubic root of 2658870 is about 138.5369752747.

The spelling of 2658870 in words is "two million, six hundred fifty-eight thousand, eight hundred seventy".