5587997861 has 2 divisors, whose sum is σ = 5587997862. Its totient is φ = 5587997860.

The previous prime is 5587997843. The next prime is 5587997881. The reversal of 5587997861 is 1687997855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5309308225 + 278689636 = 72865^2 + 16694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5587997861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5587997881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2793998930 + 2793998931.

It is an arithmetic number, because the mean of its divisors is an integer number (2793998931).

Almost surely, 2^5587997861 is an apocalyptic number.

It is an amenable number.

5587997861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5587997861 is an equidigital number, since it uses as much as digits as its factorization.

5587997861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 65.

The square root of 5587997861 is about 74752.9120569895. The cubic root of 5587997861 is about 1774.5384356703.

The spelling of 5587997861 in words is "five billion, five hundred eighty-seven million, nine hundred ninety-seven thousand, eight hundred sixty-one".