5611649 has 4 divisors (see below), whose sum is σ = 5941764. Its totient is φ = 5281536.

The previous prime is 5611643. The next prime is 5611663. The reversal of 5611649 is 9461165.

5611649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 1117249 = 2120^2 + 1057^2 .

It is a cyclic number.

It is not a de Polignac number, because 5611649 - 2²⁰ = 4563073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5611643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165032 + ... + 165065.

It is an arithmetic number, because the mean of its divisors is an integer number (1485441).

Almost surely, 2^5611649 is an apocalyptic number.

It is an amenable number.

5611649 is a deficient number, since it is larger than the sum of its proper divisors (330115).

5611649 is a wasteful number, since it uses less digits than its factorization.

5611649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330114.

The product of its digits is 6480, while the sum is 32.

The square root of 5611649 is about 2368.8919350616. The cubic root of 5611649 is about 177.7038483259.

It can be divided in two parts, 56116 and 49, that added together give a palindrome (56165).

The spelling of 5611649 in words is "five million, six hundred eleven thousand, six hundred forty-nine".