7065220655 has 16 divisors (see below), whose sum is σ = 9195941664. Its totient is φ = 5189944320.

The previous prime is 7065220639. The next prime is 7065220663. The reversal of 7065220655 is 5560225607.

It is not a de Polignac number, because 7065220655 - 2⁴ = 7065220639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1010177 + ... + 1017146.

It is an arithmetic number, because the mean of its divisors is an integer number (574746354).

Almost surely, 2^7065220655 is an apocalyptic number.

7065220655 is a deficient number, since it is larger than the sum of its proper divisors (2130721009).

7065220655 is a wasteful number, since it uses less digits than its factorization.

7065220655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027386.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 7065220655 is about 84054.8669322604. The cubic root of 7065220655 is about 1918.8539035855.

The spelling of 7065220655 in words is "seven billion, sixty-five million, two hundred twenty thousand, six hundred fifty-five".