587517661 has 2 divisors, whose sum is σ = 587517662. Its totient is φ = 587517660.

The previous prime is 587517649. The next prime is 587517691. The reversal of 587517661 is 166715785.

587517661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509901561 + 77616100 = 22581^2 + 8810^2 .

It is a cyclic number.

It is not a de Polignac number, because 587517661 - 2⁵ = 587517629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (587517691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 293758830 + 293758831.

It is an arithmetic number, because the mean of its divisors is an integer number (293758831).

Almost surely, 2^587517661 is an apocalyptic number.

It is an amenable number.

587517661 is a deficient number, since it is larger than the sum of its proper divisors (1).

587517661 is an equidigital number, since it uses as much as digits as its factorization.

587517661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 46.

The square root of 587517661 is about 24238.7636029563. The cubic root of 587517661 is about 837.5427341675.

The spelling of 587517661 in words is "five hundred eighty-seven million, five hundred seventeen thousand, six hundred sixty-one".