4624721 has 2 divisors, whose sum is σ = 4624722. Its totient is φ = 4624720.

The previous prime is 4624703. The next prime is 4624723. The reversal of 4624721 is 1274264.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4494400 + 130321 = 2120^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 4624721 - 2¹⁴ = 4608337 is a prime.

Together with 4624723, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4624723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2312360 + 2312361.

It is an arithmetic number, because the mean of its divisors is an integer number (2312361).

Almost surely, 2^4624721 is an apocalyptic number.

It is an amenable number.

4624721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4624721 is an equidigital number, since it uses as much as digits as its factorization.

4624721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 4624721 is about 2150.5164496000. The cubic root of 4624721 is about 166.6077422811.

Adding to 4624721 its reverse (1274264), we get a palindrome (5898985).

The spelling of 4624721 in words is "four million, six hundred twenty-four thousand, seven hundred twenty-one".