2220878765 has 8 divisors (see below), whose sum is σ = 3045776640. Its totient is φ = 1522888272.

The previous prime is 2220878761. The next prime is 2220878773. The reversal of 2220878765 is 5678780222.

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

It is a cyclic number.

It is not a de Polignac number, because 2220878765 - 2² = 2220878761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220878761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31726805 + ... + 31726874.

It is an arithmetic number, because the mean of its divisors is an integer number (380722080).

Almost surely, 2^2220878765 is an apocalyptic number.

It is an amenable number.

2220878765 is a deficient number, since it is larger than the sum of its proper divisors (824897875).

2220878765 is an equidigital number, since it uses as much as digits as its factorization.

2220878765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63453691.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 2220878765 is about 47126.2004091142. The cubic root of 2220878765 is about 1304.6928545176.

The spelling of 2220878765 in words is "two billion, two hundred twenty million, eight hundred seventy-eight thousand, seven hundred sixty-five".