220847487 has 16 divisors (see below), whose sum is σ = 345626112. Its totient is φ = 122787360.

The previous prime is 220847483. The next prime is 220847491. The reversal of 220847487 is 784748022.

It is an interprime number because it is at equal distance from previous prime (220847483) and next prime (220847491).

It is not a de Polignac number, because 220847487 - 2² = 220847483 is a prime.

It is a super-2 number, since 2×220847487² = 97547225028430338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220847483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141339 + ... + 142892.

It is an arithmetic number, because the mean of its divisors is an integer number (21601632).

Almost surely, 2^220847487 is an apocalyptic number.

220847487 is a deficient number, since it is larger than the sum of its proper divisors (124778625).

220847487 is a wasteful number, since it uses less digits than its factorization.

220847487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284278.

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 220847487 is about 14860.9382947377. The cubic root of 220847487 is about 604.4552499197.

The spelling of 220847487 in words is "two hundred twenty million, eight hundred forty-seven thousand, four hundred eighty-seven".