4642661 has 2 divisors, whose sum is σ = 4642662. Its totient is φ = 4642660.

The previous prime is 4642657. The next prime is 4642679. The reversal of 4642661 is 1662464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 1366561 = 1810^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642661 - 2² = 4642657 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4642601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321330 + 2321331.

It is an arithmetic number, because the mean of its divisors is an integer number (2321331).

Almost surely, 2^4642661 is an apocalyptic number.

It is an amenable number.

4642661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642661 is an equidigital number, since it uses as much as digits as its factorization.

4642661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 4642661 is about 2154.6835034408. The cubic root of 4642661 is about 166.8228966186.

It can be divided in two parts, 464 and 2661, that added together give a 5-th power (3125 = 5⁵).

The spelling of 4642661 in words is "four million, six hundred forty-two thousand, six hundred sixty-one".