7270220066 has 4 divisors (see below), whose sum is σ = 10905330102. Its totient is φ = 3635110032.

The previous prime is 7270220033. The next prime is 7270220147. The reversal of 7270220066 is 6600220727.

7270220066 is digitally balanced in base 5, 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.

It can be written as a sum of positive squares in only one way, i.e., 6919744225 + 350475841 = 83185^2 + 18721^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1817555015 + ... + 1817555018.

Almost surely, 2^7270220066 is an apocalyptic number.

7270220066 is a deficient number, since it is larger than the sum of its proper divisors (3635110036).

7270220066 is a wasteful number, since it uses less digits than its factorization.

7270220066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635110035.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 7270220066 is about 85265.5854726865. The cubic root of 7270220066 is about 1937.2359462889.

The spelling of 7270220066 in words is "seven billion, two hundred seventy million, two hundred twenty thousand, sixty-six".