7222457866 has 16 divisors (see below), whose sum is σ = 11687291784. Its totient is φ = 3327657984.

The previous prime is 7222457863. The next prime is 7222457873. The reversal of 7222457866 is 6687542227.

It can be written as a sum of positive squares in 4 ways, for example, as 7191888025 + 30569841 = 84805^2 + 5529^2 .

It is a super-2 number, since 2×7222457866² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7222457863) 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, 225715 + ... + 255718.

Almost surely, 2^7222457866 is an apocalyptic number.

7222457866 is a deficient number, since it is larger than the sum of its proper divisors (4464833918).

7222457866 is a wasteful number, since it uses less digits than its factorization.

7222457866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482025.

The product of its digits is 2257920, while the sum is 49.

The square root of 7222457866 is about 84985.0449549802. The cubic root of 7222457866 is about 1932.9843549725.

The spelling of 7222457866 in words is "seven billion, two hundred twenty-two million, four hundred fifty-seven thousand, eight hundred sixty-six".