7221886687 has 2 divisors, whose sum is σ = 7221886688. Its totient is φ = 7221886686.

The previous prime is 7221886663. The next prime is 7221886717. The reversal of 7221886687 is 7866881227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7221886687 - 2¹¹ = 7221884639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221826687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610943343 + 3610943344.

It is an arithmetic number, because the mean of its divisors is an integer number (3610943344).

Almost surely, 2^7221886687 is an apocalyptic number.

7221886687 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221886687 is an equidigital number, since it uses as much as digits as its factorization.

7221886687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3612672, while the sum is 55.

The square root of 7221886687 is about 84981.6844208209. The cubic root of 7221886687 is about 1932.9333977500.

The spelling of 7221886687 in words is "seven billion, two hundred twenty-one million, eight hundred eighty-six thousand, six hundred eighty-seven".