1206466621 has 2 divisors, whose sum is σ = 1206466622. Its totient is φ = 1206466620.

The previous prime is 1206466607. The next prime is 1206466627. The reversal of 1206466621 is 1266646021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773618596 + 432848025 = 27814^2 + 20805^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206466621 - 2⁷ = 1206466493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206466627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603233310 + 603233311.

It is an arithmetic number, because the mean of its divisors is an integer number (603233311).

Almost surely, 2^1206466621 is an apocalyptic number.

It is an amenable number.

1206466621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206466621 is an equidigital number, since it uses as much as digits as its factorization.

1206466621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1206466621 is about 34734.2283777832. The cubic root of 1206466621 is about 1064.5639867720.

The spelling of 1206466621 in words is "one billion, two hundred six million, four hundred sixty-six thousand, six hundred twenty-one".