4657621 has 2 divisors, whose sum is σ = 4657622. Its totient is φ = 4657620.

The previous prime is 4657613. The next prime is 4657687. The reversal of 4657621 is 1267564.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3478225 + 1179396 = 1865^2 + 1086^2 .

It is a cyclic number.

It is not a de Polignac number, because 4657621 - 2³ = 4657613 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 (4657691) 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 as a sum of consecutive naturals, namely, 2328810 + 2328811.

It is an arithmetic number, because the mean of its divisors is an integer number (2328811).

Almost surely, 2^4657621 is an apocalyptic number.

It is an amenable number.

4657621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4657621 is an equidigital number, since it uses as much as digits as its factorization.

4657621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 4657621 is about 2158.1522189132. The cubic root of 4657621 is about 167.0018884173.

The spelling of 4657621 in words is "four million, six hundred fifty-seven thousand, six hundred twenty-one".