7221471865 has 8 divisors (see below), whose sum is σ = 8728110720. Its totient is φ = 5735614512.

The previous prime is 7221471853. The next prime is 7221471869. The reversal of 7221471865 is 5681741227.

7221471865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7221471865 - 2⁵ = 7221471833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7221471869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5194609 + ... + 5195998.

It is an arithmetic number, because the mean of its divisors is an integer number (1091013840).

Almost surely, 2^7221471865 is an apocalyptic number.

It is an amenable number.

7221471865 is a deficient number, since it is larger than the sum of its proper divisors (1506638855).

7221471865 is a wasteful number, since it uses less digits than its factorization.

7221471865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390751.

The product of its digits is 188160, while the sum is 43.

The square root of 7221471865 is about 84979.2437304546. The cubic root of 7221471865 is about 1932.8963880929.

The spelling of 7221471865 in words is "seven billion, two hundred twenty-one million, four hundred seventy-one thousand, eight hundred sixty-five".