481210661 has 2 divisors, whose sum is σ = 481210662. Its totient is φ = 481210660.

The previous prime is 481210651. The next prime is 481210699. The reversal of 481210661 is 166012184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399760036 + 81450625 = 19994^2 + 9025^2 .

It is a cyclic number.

It is not a de Polignac number, because 481210661 - 2¹⁴ = 481194277 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 (481210621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240605330 + 240605331.

It is an arithmetic number, because the mean of its divisors is an integer number (240605331).

Almost surely, 2^481210661 is an apocalyptic number.

It is an amenable number.

481210661 is a deficient number, since it is larger than the sum of its proper divisors (1).

481210661 is an equidigital number, since it uses as much as digits as its factorization.

481210661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 481210661 is about 21936.5143311329. The cubic root of 481210661 is about 783.6312502352.

The spelling of 481210661 in words is "four hundred eighty-one million, two hundred ten thousand, six hundred sixty-one".