220476677 has 4 divisors (see below), whose sum is σ = 221584800. Its totient is φ = 219368556.

The previous prime is 220476667. The next prime is 220476691. The reversal of 220476677 is 776674022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776674022 = 2 ⋅388337011.

It is a cyclic number.

It is not a de Polignac number, because 220476677 - 2²² = 216282373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220476667) 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 3 ways as a sum of consecutive naturals, for example, 553763 + ... + 554160.

It is an arithmetic number, because the mean of its divisors is an integer number (55396200).

Almost surely, 2^220476677 is an apocalyptic number.

It is an amenable number.

220476677 is a deficient number, since it is larger than the sum of its proper divisors (1108123).

220476677 is a wasteful number, since it uses less digits than its factorization.

220476677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108122.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 220476677 is about 14848.4570578899. The cubic root of 220476677 is about 604.1167604997.

The spelling of 220476677 in words is "two hundred twenty million, four hundred seventy-six thousand, six hundred seventy-seven".