7220651863 has 4 divisors (see below), whose sum is σ = 7227895240. Its totient is φ = 7213408488.

The previous prime is 7220651857. The next prime is 7220651873. The reversal of 7220651863 is 3681560227.

7220651863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3681560227 = 113 ⋅32580179.

It is a cyclic number.

It is not a de Polignac number, because 7220651863 - 2⁵ = 7220651831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220651803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3620193 + ... + 3622186.

It is an arithmetic number, because the mean of its divisors is an integer number (1806973810).

Almost surely, 2^7220651863 is an apocalyptic number.

7220651863 is a deficient number, since it is larger than the sum of its proper divisors (7243377).

7220651863 is an equidigital number, since it uses as much as digits as its factorization.

7220651863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243376.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 7220651863 is about 84974.4188741529. The cubic root of 7220651863 is about 1932.8232248500.

The spelling of 7220651863 in words is "seven billion, two hundred twenty million, six hundred fifty-one thousand, eight hundred sixty-three".