487963661 has 2 divisors, whose sum is σ = 487963662. Its totient is φ = 487963660.

The previous prime is 487963649. The next prime is 487963669. The reversal of 487963661 is 166369784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373687561 + 114276100 = 19331^2 + 10690^2 .

It is a cyclic number.

It is not a de Polignac number, because 487963661 - 2¹⁰ = 487962637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487963669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243981830 + 243981831.

It is an arithmetic number, because the mean of its divisors is an integer number (243981831).

Almost surely, 2^487963661 is an apocalyptic number.

It is an amenable number.

487963661 is a deficient number, since it is larger than the sum of its proper divisors (1).

487963661 is an equidigital number, since it uses as much as digits as its factorization.

487963661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 487963661 is about 22089.8995244433. The cubic root of 487963661 is about 787.2798940081.

The spelling of 487963661 in words is "four hundred eighty-seven million, nine hundred sixty-three thousand, six hundred sixty-one".