3611616 has 48 divisors (see below), whose sum is σ = 10042704. Its totient is φ = 1132544.

The previous prime is 3611603. The next prime is 3611623. The reversal of 3611616 is 6161163.

3611616 is nontrivially palindromic in base 9.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526 + ... + 2738.

It is an arithmetic number, because the mean of its divisors is an integer number (209223).

Almost surely, 2^3611616 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 3611616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5021352).

3611616 is an abundant number, since it is smaller than the sum of its proper divisors (6431088).

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

3611616 is a wasteful number, since it uses less digits than its factorization.

3611616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2235 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 3611616 is about 1900.4252155768. The cubic root of 3611616 is about 153.4265511729.

Adding to 3611616 its reverse (6161163), we get a palindrome (9772779).

The spelling of 3611616 in words is "three million, six hundred eleven thousand, six hundred sixteen".