4642609 has 2 divisors, whose sum is σ = 4642610. Its totient is φ = 4642608.

The previous prime is 4642607. The next prime is 4642621. The reversal of 4642609 is 9062464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2900209 + 1742400 = 1703^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642609 - 2¹ = 4642607 is a prime.

Together with 4642607, it forms a pair of twin primes.

It is a Chen prime.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321304 + 2321305.

It is an arithmetic number, because the mean of its divisors is an integer number (2321305).

Almost surely, 2^4642609 is an apocalyptic number.

It is an amenable number.

4642609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642609 is an equidigital number, since it uses as much as digits as its factorization.

4642609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 4642609 is about 2154.6714366696. The cubic root of 4642609 is about 166.8222737844.

The spelling of 4642609 in words is "four million, six hundred forty-two thousand, six hundred nine".