461206621 has 2 divisors, whose sum is σ = 461206622. Its totient is φ = 461206620.

The previous prime is 461206607. The next prime is 461206631. The reversal of 461206621 is 126602164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445800996 + 15405625 = 21114^2 + 3925^2 .

It is a cyclic number.

It is not a de Polignac number, because 461206621 - 2¹³ = 461198429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 461206621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461206601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230603310 + 230603311.

It is an arithmetic number, because the mean of its divisors is an integer number (230603311).

Almost surely, 2^461206621 is an apocalyptic number.

It is an amenable number.

461206621 is a deficient number, since it is larger than the sum of its proper divisors (1).

461206621 is an equidigital number, since it uses as much as digits as its factorization.

461206621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 461206621 is about 21475.7216642422. The cubic root of 461206621 is about 772.6186331701.

Adding to 461206621 its reverse (126602164), we get a palindrome (587808785).

The spelling of 461206621 in words is "four hundred sixty-one million, two hundred six thousand, six hundred twenty-one".