2961644 has 36 divisors (see below), whose sum is σ = 6272784. Its totient is φ = 1198368.

The previous prime is 2961619. The next prime is 2961659. The reversal of 2961644 is 4461692.

It is a happy number.

2961644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2961644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9962 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (174244).

2^2961644 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 2961644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3136392).

2961644 is an abundant number, since it is smaller than the sum of its proper divisors (3311140).

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

2961644 is a wasteful number, since it uses less digits than its factorization.

2961644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 321 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 2961644 is about 1720.9427648821. The cubic root of 2961644 is about 143.6076640256.

The spelling of 2961644 in words is "two million, nine hundred sixty-one thousand, six hundred forty-four".