4787621 has 2 divisors, whose sum is σ = 4787622. Its totient is φ = 4787620.

The previous prime is 4787603. The next prime is 4787633. The reversal of 4787621 is 1267874.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4778596 + 9025 = 2186^2 + 95^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4787621 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 (4787641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2393810 + 2393811.

It is an arithmetic number, because the mean of its divisors is an integer number (2393811).

Almost surely, 2^4787621 is an apocalyptic number.

It is an amenable number.

4787621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4787621 is an equidigital number, since it uses as much as digits as its factorization.

4787621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 4787621 is about 2188.0632989016. The cubic root of 4787621 is about 168.5413963749.

The spelling of 4787621 in words is "four million, seven hundred eighty-seven thousand, six hundred twenty-one".