2615868 has 48 divisors (see below), whose sum is σ = 6924960. Its totient is φ = 853632.

The previous prime is 2615861. The next prime is 2615869. The reversal of 2615868 is 8685162.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2615861) 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 15 ways as a sum of consecutive naturals, for example, 5496 + ... + 5952.

It is an arithmetic number, because the mean of its divisors is an integer number (144270).

2^2615868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2615868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3462480).

2615868 is an abundant number, since it is smaller than the sum of its proper divisors (4309092).

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

2615868 is a wasteful number, since it uses less digits than its factorization.

2615868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 515 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 2615868 is about 1617.3645229199. The cubic root of 2615868 is about 137.7860579099.

The spelling of 2615868 in words is "two million, six hundred fifteen thousand, eight hundred sixty-eight".