220077 has 40 divisors (see below), whose sum is σ = 406560. Its totient is φ = 116640.

The previous prime is 220063. The next prime is 220123. The reversal of 220077 is 770022.

It is not a de Polignac number, because 220077 - 2⁶ = 220013 is a prime.

It is an Ulam number.

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 (220057) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11574 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (10164).

2²²⁰⁰⁷⁷ is an apocalyptic number.

220077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

220077 is the 297-th heptagonal number.

It is an amenable number.

220077 is a deficient number, since it is larger than the sum of its proper divisors (186483).

220077 is a wasteful number, since it uses less digits than its factorization.

220077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 46 counting only the distinct ones).

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

The square root of 220077 is about 469.1236510772. The cubic root of 220077 is about 60.3751494923.

Adding to 220077 its reverse (770022), we get a palindrome (990099).

Subtracting 220077 from its reverse (770022), we obtain a palindrome (549945).

The spelling of 220077 in words is "two hundred twenty thousand, seventy-seven", and thus it is an iban number.