220807 has 2 divisors, whose sum is σ = 220808. Its totient is φ = 220806.

The previous prime is 220793. The next prime is 220811. The reversal of 220807 is 708022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220877) 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 as a sum of consecutive naturals, namely, 110403 + 110404.

It is an arithmetic number, because the mean of its divisors is an integer number (110404).

2²²⁰⁸⁰⁷ is an apocalyptic number.

220807 is a deficient number, since it is larger than the sum of its proper divisors (1).

220807 is an equidigital number, since it uses as much as digits as its factorization.

220807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 220807 is about 469.9010534144. The cubic root of 220807 is about 60.4418310287.

Adding to 220807 its reverse (708022), we get a palindrome (928829).

It can be divided in two parts, 2 and 20807, that multiplied together give a palindrome (41614).

The spelling of 220807 in words is "two hundred twenty thousand, eight hundred seven".