2163612 has 48 divisors (see below), whose sum is σ = 5668992. Its totient is φ = 636480.

The previous prime is 2163593. The next prime is 2163613.

It is a happy number.

2163612 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4663 + ... + 5105.

It is an arithmetic number, because the mean of its divisors is an integer number (118104).

2^2163612 is an apocalyptic number.

2163612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2163612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2834496).

2163612 is an abundant number, since it is smaller than the sum of its proper divisors (3505380).

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

2163612 is a wasteful number, since it uses less digits than its factorization.

2163612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 496 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 2163612 is about 1470.9221597352. The cubic root of 2163612 is about 129.3380951471.

It can be divided in two parts, 2163 and 612, that added together give a triangular number (2775 = T₇₄).

The spelling of 2163612 in words is "two million, one hundred sixty-three thousand, six hundred twelve".