466664021 has 2 divisors, whose sum is σ = 466664022. Its totient is φ = 466664020.

The previous prime is 466663949. The next prime is 466664039. The reversal of 466664021 is 120466664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389470225 + 77193796 = 19735^2 + 8786^2 .

It is a cyclic number.

It is not a de Polignac number, because 466664021 - 2¹⁰ = 466662997 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 (466664071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 233332010 + 233332011.

It is an arithmetic number, because the mean of its divisors is an integer number (233332011).

Almost surely, 2^466664021 is an apocalyptic number.

It is an amenable number.

466664021 is a deficient number, since it is larger than the sum of its proper divisors (1).

466664021 is an equidigital number, since it uses as much as digits as its factorization.

466664021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 466664021 is about 21602.4077593216. The cubic root of 466664021 is about 775.6541246764.

The spelling of 466664021 in words is "four hundred sixty-six million, six hundred sixty-four thousand, twenty-one".