220340507 has 4 divisors (see below), whose sum is σ = 220388160. Its totient is φ = 220292856.

The previous prime is 220340453. The next prime is 220340509. The reversal of 220340507 is 705043022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220340507 - 2⁶ = 220340443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220340509) 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, 16043 + ... + 26420.

It is an arithmetic number, because the mean of its divisors is an integer number (55097040).

Almost surely, 2^220340507 is an apocalyptic number.

220340507 is a deficient number, since it is larger than the sum of its proper divisors (47653).

220340507 is an equidigital number, since it uses as much as digits as its factorization.

220340507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47652.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 220340507 is about 14843.8710247698. The cubic root of 220340507 is about 603.9923640907.

Adding to 220340507 its reverse (705043022), we get a palindrome (925383529).

The spelling of 220340507 in words is "two hundred twenty million, three hundred forty thousand, five hundred seven".