3220278655 has 8 divisors (see below), whose sum is σ = 4215637584. Its totient is φ = 2342020800.

The previous prime is 3220278641. The next prime is 3220278673. The reversal of 3220278655 is 5568720223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3220278655 - 2¹⁵ = 3220245887 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29275206 + ... + 29275315.

It is an arithmetic number, because the mean of its divisors is an integer number (526954698).

Almost surely, 2^3220278655 is an apocalyptic number.

3220278655 is a deficient number, since it is larger than the sum of its proper divisors (995358929).

3220278655 is a wasteful number, since it uses less digits than its factorization.

3220278655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58550537.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 3220278655 is about 56747.4991078902. The cubic root of 3220278655 is about 1476.7188473109.

Adding to 3220278655 its reverse (5568720223), we get a palindrome (8788998878).

The spelling of 3220278655 in words is "three billion, two hundred twenty million, two hundred seventy-eight thousand, six hundred fifty-five".