4642621 has 2 divisors, whose sum is σ = 4642622. Its totient is φ = 4642620.

The previous prime is 4642609. The next prime is 4642643. The reversal of 4642621 is 1262464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3980025 + 662596 = 1995^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642621 - 2⁷ = 4642493 is a 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 polite number, since it can be written as a sum of consecutive naturals, namely, 2321310 + 2321311.

It is an arithmetic number, because the mean of its divisors is an integer number (2321311).

Almost surely, 2^4642621 is an apocalyptic number.

It is an amenable number.

4642621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642621 is an equidigital number, since it uses as much as digits as its factorization.

4642621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 4642621 is about 2154.6742213151. The cubic root of 4642621 is about 166.8224175158.

The spelling of 4642621 in words is "four million, six hundred forty-two thousand, six hundred twenty-one".