4766656021 has 8 divisors (see below), whose sum is σ = 4933261080. Its totient is φ = 4600200192.

The previous prime is 4766656019. The next prime is 4766656043. The reversal of 4766656021 is 1206566674.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2936014225 + 1830641796 = 54185^2 + 42786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4766656021 - 2¹ = 4766656019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4766656051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29761 + ... + 102073.

It is an arithmetic number, because the mean of its divisors is an integer number (616657635).

Almost surely, 2^4766656021 is an apocalyptic number.

It is an amenable number.

4766656021 is a deficient number, since it is larger than the sum of its proper divisors (166605059).

4766656021 is a wasteful number, since it uses less digits than its factorization.

4766656021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74615.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 4766656021 is about 69040.9734940057. The cubic root of 4766656021 is about 1682.9502229888.

The spelling of 4766656021 in words is "four billion, seven hundred sixty-six million, six hundred fifty-six thousand, twenty-one".