2277720321 has 8 divisors (see below), whose sum is σ = 3063836640. Its totient is φ = 1505042112.

The previous prime is 2277720301. The next prime is 2277720343. The reversal of 2277720321 is 1230277722.

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

It is not a de Polignac number, because 2277720321 - 2³⁰ = 1203978497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2277720301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3359131 + ... + 3359808.

It is an arithmetic number, because the mean of its divisors is an integer number (382979580).

Almost surely, 2^2277720321 is an apocalyptic number.

It is an amenable number.

2277720321 is a deficient number, since it is larger than the sum of its proper divisors (786116319).

2277720321 is a wasteful number, since it uses less digits than its factorization.

2277720321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719055.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 2277720321 is about 47725.4682638107. The cubic root of 2277720321 is about 1315.7300655771.

The spelling of 2277720321 in words is "two billion, two hundred seventy-seven million, seven hundred twenty thousand, three hundred twenty-one".