4650561 has 8 divisors (see below), whose sum is σ = 6889760. Its totient is φ = 3100356.

The previous prime is 4650559. The next prime is 4650587. The reversal of 4650561 is 1650564.

It is a happy number.

4650561 is a `hidden beast` number, since 4 + 650 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 4650561 - 2¹ = 4650559 is a prime.

It is a super-2 number, since 2×4650561² = 43255435229442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 172243 = 4650561 / (4 + 6 + 5 + 0 + 5 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4650511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86095 + ... + 86148.

It is an arithmetic number, because the mean of its divisors is an integer number (861220).

Almost surely, 2^4650561 is an apocalyptic number.

It is an amenable number.

4650561 is a deficient number, since it is larger than the sum of its proper divisors (2239199).

4650561 is a wasteful number, since it uses less digits than its factorization.

4650561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172252 (or 172246 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 4650561 is about 2156.5159401219. The cubic root of 4650561 is about 166.9174655214.

The spelling of 4650561 in words is "four million, six hundred fifty thousand, five hundred sixty-one".