87560566997 has 2 divisors, whose sum is σ = 87560566998. Its totient is φ = 87560566996.

The previous prime is 87560566993. The next prime is 87560567027. The reversal of 87560566997 is 79966506578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56327427556 + 31233139441 = 237334^2 + 176729^2 .

It is a cyclic number.

It is not a de Polignac number, because 87560566997 - 2² = 87560566993 is a prime.

It is a super-2 number, since 2×87560566997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87560566993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43780283498 + 43780283499.

It is an arithmetic number, because the mean of its divisors is an integer number (43780283499).

Almost surely, 2^87560566997 is an apocalyptic number.

It is an amenable number.

87560566997 is a deficient number, since it is larger than the sum of its proper divisors (1).

87560566997 is an equidigital number, since it uses as much as digits as its factorization.

87560566997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 171460800, while the sum is 68.

The spelling of 87560566997 in words is "eighty-seven billion, five hundred sixty million, five hundred sixty-six thousand, nine hundred ninety-seven".