655220026 has 16 divisors (see below), whose sum is σ = 1035909000. Its totient is φ = 310343488.

The previous prime is 655220017. The next prime is 655220039. The reversal of 655220026 is 620022556.

It can be written as a sum of positive squares in 4 ways, for example, as 638825625 + 16394401 = 25275^2 + 4049^2 .

It is a junction number, because it is equal to n+sod(n) for n = 655219976 and 655220003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103501 + ... + 109648.

Almost surely, 2^655220026 is an apocalyptic number.

655220026 is a deficient number, since it is larger than the sum of its proper divisors (380688974).

655220026 is a wasteful number, since it uses less digits than its factorization.

655220026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213233.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 655220026 is about 25597.2659868198. The cubic root of 655220026 is about 868.5517924300.

The spelling of 655220026 in words is "six hundred fifty-five million, two hundred twenty thousand, twenty-six".