220776049 has 8 divisors (see below), whose sum is σ = 237968360. Its totient is φ = 203613696.

The previous prime is 220776047. The next prime is 220776091. The reversal of 220776049 is 940677022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15054400 + 205721649 = 3880^2 + 14343^2 .

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

It is not a de Polignac number, because 220776049 - 2¹ = 220776047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220775999 and 220776017.

It is not an unprimeable number, because it can be changed into a prime (220776041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9217 + ... + 22945.

It is an arithmetic number, because the mean of its divisors is an integer number (29746045).

Almost surely, 2^220776049 is an apocalyptic number.

It is an amenable number.

220776049 is a deficient number, since it is larger than the sum of its proper divisors (17192311).

220776049 is a wasteful number, since it uses less digits than its factorization.

220776049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14979.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 220776049 is about 14858.5345508903. The cubic root of 220776049 is about 604.3900680884.

The spelling of 220776049 in words is "two hundred twenty million, seven hundred seventy-six thousand, forty-nine".