4684566421 has 2 divisors, whose sum is σ = 4684566422. Its totient is φ = 4684566420.

The previous prime is 4684566409. The next prime is 4684566437. The reversal of 4684566421 is 1246654864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3955026321 + 729540100 = 62889^2 + 27010^2 .

It is a cyclic number.

It is not a de Polignac number, because 4684566421 - 2⁵ = 4684566389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4684566401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2342283210 + 2342283211.

It is an arithmetic number, because the mean of its divisors is an integer number (2342283211).

Almost surely, 2^4684566421 is an apocalyptic number.

It is an amenable number.

4684566421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4684566421 is an equidigital number, since it uses as much as digits as its factorization.

4684566421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 46.

The square root of 4684566421 is about 68443.8925032760. The cubic root of 4684566421 is about 1673.2331762254.

The spelling of 4684566421 in words is "four billion, six hundred eighty-four million, five hundred sixty-six thousand, four hundred twenty-one".