479866661 has 2 divisors, whose sum is σ = 479866662. Its totient is φ = 479866660.

The previous prime is 479866637. The next prime is 479866669. The reversal of 479866661 is 166668974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479829025 + 37636 = 21905^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 479866661 - 2¹⁰ = 479865637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479866669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239933330 + 239933331.

It is an arithmetic number, because the mean of its divisors is an integer number (239933331).

Almost surely, 2^479866661 is an apocalyptic number.

It is an amenable number.

479866661 is a deficient number, since it is larger than the sum of its proper divisors (1).

479866661 is an equidigital number, since it uses as much as digits as its factorization.

479866661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The square root of 479866661 is about 21905.8590564260. The cubic root of 479866661 is about 782.9010208894.

The spelling of 479866661 in words is "four hundred seventy-nine million, eight hundred sixty-six thousand, six hundred sixty-one".