7220035985 has 4 divisors (see below), whose sum is σ = 8664043188. Its totient is φ = 5776028784.

The previous prime is 7220035939. The next prime is 7220036003. The reversal of 7220035985 is 5895300227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5895300227 = 97 ⋅60776291.

It can be written as a sum of positive squares in 2 ways, for example, as 5578894864 + 1641141121 = 74692^2 + 40511^2 .

It is a cyclic number.

It is not a de Polignac number, because 7220035985 - 2⁸ = 7220035729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722003594 + ... + 722003603.

It is an arithmetic number, because the mean of its divisors is an integer number (2166010797).

Almost surely, 2^7220035985 is an apocalyptic number.

It is an amenable number.

7220035985 is a deficient number, since it is larger than the sum of its proper divisors (1444007203).

7220035985 is a wasteful number, since it uses less digits than its factorization.

7220035985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444007202.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 7220035985 is about 84970.7948944812. The cubic root of 7220035985 is about 1932.7682705712.

The spelling of 7220035985 in words is "seven billion, two hundred twenty million, thirty-five thousand, nine hundred eighty-five".