2064644 has 6 divisors (see below), whose sum is σ = 3613134. Its totient is φ = 1032320.

The previous prime is 2064619. The next prime is 2064649. The reversal of 2064644 is 4464602.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 828100 = 1112^2 + 910^2 .

It is not an unprimeable number, because it can be changed into a prime (2064649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258077 + ... + 258084.

It is an arithmetic number, because the mean of its divisors is an integer number (602189).

2^2064644 is an apocalyptic number.

It is an amenable number.

2064644 is a deficient number, since it is larger than the sum of its proper divisors (1548490).

2064644 is a wasteful number, since it uses less digits than its factorization.

2064644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516165 (or 516163 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2064644 is about 1436.8869127388. The cubic root of 2064644 is about 127.3351759706.

The spelling of 2064644 in words is "two million, sixty-four thousand, six hundred forty-four".