2681646 has 32 divisors (see below), whose sum is σ = 5999616. Its totient is φ = 792000.

The previous prime is 2681617. The next prime is 2681663. The reversal of 2681646 is 6461862.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2211 + ... + 3201.

It is an arithmetic number, because the mean of its divisors is an integer number (187488).

2^2681646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2681646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2999808).

2681646 is an abundant number, since it is smaller than the sum of its proper divisors (3317970).

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

2681646 is a wasteful number, since it uses less digits than its factorization.

2681646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048.

The product of its digits is 13824, while the sum is 33.

The square root of 2681646 is about 1637.5732044706. The cubic root of 2681646 is about 138.9314224457.

It can be divided in two parts, 26816 and 46, that added together give a palindrome (26862).

The spelling of 2681646 in words is "two million, six hundred eighty-one thousand, six hundred forty-six".