485206661 has 2 divisors, whose sum is σ = 485206662. Its totient is φ = 485206660.

The previous prime is 485206621. The next prime is 485206723. The reversal of 485206661 is 166602584.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283282561 + 201924100 = 16831^2 + 14210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485206661 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 (485206621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242603330 + 242603331.

It is an arithmetic number, because the mean of its divisors is an integer number (242603331).

Almost surely, 2^485206661 is an apocalyptic number.

It is an amenable number.

485206661 is a deficient number, since it is larger than the sum of its proper divisors (1).

485206661 is an equidigital number, since it uses as much as digits as its factorization.

485206661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 485206661 is about 22027.4070421373. The cubic root of 485206661 is about 785.7943794353.

The spelling of 485206661 in words is "four hundred eighty-five million, two hundred six thousand, six hundred sixty-one".