4689661 has 2 divisors, whose sum is σ = 4689662. Its totient is φ = 4689660.

The previous prime is 4689611. The next prime is 4689667. The reversal of 4689661 is 1669864.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3261636 + 1428025 = 1806^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 4689661 - 2⁹ = 4689149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4689667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2344830 + 2344831.

It is an arithmetic number, because the mean of its divisors is an integer number (2344831).

Almost surely, 2^4689661 is an apocalyptic number.

It is an amenable number.

4689661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4689661 is an equidigital number, since it uses as much as digits as its factorization.

4689661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 4689661 is about 2165.5625135285. The cubic root of 4689661 is about 167.3839516957.

The spelling of 4689661 in words is "four million, six hundred eighty-nine thousand, six hundred sixty-one".