4654676021 has 2 divisors, whose sum is σ = 4654676022. Its totient is φ = 4654676020.

The previous prime is 4654675933. The next prime is 4654676023. The reversal of 4654676021 is 1206764564.

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., 2960448100 + 1694227921 = 54410^2 + 41161^2 .

It is a cyclic number.

It is not a de Polignac number, because 4654676021 - 2¹⁸ = 4654413877 is a prime.

Together with 4654676023, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4654676021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4654676023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2327338010 + 2327338011.

It is an arithmetic number, because the mean of its divisors is an integer number (2327338011).

Almost surely, 2^4654676021 is an apocalyptic number.

It is an amenable number.

4654676021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4654676021 is an equidigital number, since it uses as much as digits as its factorization.

4654676021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 4654676021 is about 68225.1861192038. The cubic root of 4654676021 is about 1669.6668298033. Note that the first 3 decimals are identical.

The spelling of 4654676021 in words is "four billion, six hundred fifty-four million, six hundred seventy-six thousand, twenty-one".