2658 has 8 divisors (see below), whose sum is σ = 5328. Its totient is φ = 884.

The previous prime is 2657. The next prime is 2659. The reversal of 2658 is 8562.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2657) and next prime (2659).

It is a sphenic number, since it is the product of 3 distinct primes.

2658 is an admirable number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216 + ... + 227.

It is an arithmetic number, because the mean of its divisors is an integer number (666).

2658 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664).

2658 is a wasteful number, since it uses less digits than its factorization.

2658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448.

The product of its digits is 480, while the sum is 21.

The square root of 2658 is about 51.5557950186. Note that the first 3 decimals coincide. The cubic root of 2658 is about 13.8521863552.

The spelling of 2658 in words is "two thousand, six hundred fifty-eight".