2220279649 has 8 divisors (see below), whose sum is σ = 2538164160. Its totient is φ = 1902570576.

The previous prime is 2220279641. The next prime is 2220279661. The reversal of 2220279649 is 9469720222.

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 2220279649 - 2³ = 2220279641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220279641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15514 + ... + 68419.

It is an arithmetic number, because the mean of its divisors is an integer number (317270520).

Almost surely, 2^2220279649 is an apocalyptic number.

It is an amenable number.

2220279649 is a deficient number, since it is larger than the sum of its proper divisors (317884511).

2220279649 is an equidigital number, since it uses as much as digits as its factorization.

2220279649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87719.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 2220279649 is about 47119.8434738487. The cubic root of 2220279649 is about 1304.5755236851.

The spelling of 2220279649 in words is "two billion, two hundred twenty million, two hundred seventy-nine thousand, six hundred forty-nine".