4649561 has 6 divisors (see below), whose sum is σ = 5408730. Its totient is φ = 3985296.

The previous prime is 4649549. The next prime is 4649573. The reversal of 4649561 is 1659464.

It is an interprime number because it is at equal distance from previous prime (4649549) and next prime (4649573).

It can be written as a sum of positive squares in only one way, i.e., 4648336 + 1225 = 2156^2 + 35^2 .

It is not a de Polignac number, because 4649561 - 2⁶ = 4649497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4649521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47396 + ... + 47493.

It is an arithmetic number, because the mean of its divisors is an integer number (901455).

Almost surely, 2^4649561 is an apocalyptic number.

It is an amenable number.

4649561 is a deficient number, since it is larger than the sum of its proper divisors (759169).

4649561 is an equidigital number, since it uses as much as digits as its factorization.

4649561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94903 (or 94896 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 4649561 is about 2156.2840721946. The cubic root of 4649561 is about 166.9055006975.

The spelling of 4649561 in words is "four million, six hundred forty-nine thousand, five hundred sixty-one".