220000077 has 32 divisors (see below), whose sum is σ = 376479360. Its totient is φ = 125487360.

The previous prime is 220000073. The next prime is 220000141. The reversal of 220000077 is 770000022.

It is not a de Polignac number, because 220000077 - 2² = 220000073 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16738 + ... + 26835.

It is an arithmetic number, because the mean of its divisors is an integer number (11764980).

Almost surely, 2^220000077 is an apocalyptic number.

220000077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

220000077 is a deficient number, since it is larger than the sum of its proper divisors (156479283).

220000077 is a wasteful number, since it uses less digits than its factorization.

220000077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43610 (or 43604 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 220000077 is about 14832.3995698606. The cubic root of 220000077 is about 603.6811441092.

Adding to 220000077 its reverse (770000022), we get a palindrome (990000099).

Subtracting 220000077 from its reverse (770000022), we obtain a palindrome (549999945).

The spelling of 220000077 in words is "two hundred twenty million, seventy-seven", and thus it is an aban number.