220809707 has 2 divisors, whose sum is σ = 220809708. Its totient is φ = 220809706.

The previous prime is 220809629. The next prime is 220809709. The reversal of 220809707 is 707908022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220809707 - 2¹⁰ = 220808683 is a prime.

Together with 220809709, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220809709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110404853 + 110404854.

It is an arithmetic number, because the mean of its divisors is an integer number (110404854).

Almost surely, 2^220809707 is an apocalyptic number.

220809707 is a deficient number, since it is larger than the sum of its proper divisors (1).

220809707 is an equidigital number, since it uses as much as digits as its factorization.

220809707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 220809707 is about 14859.6671227858. The cubic root of 220809707 is about 604.4207802472.

The spelling of 220809707 in words is "two hundred twenty million, eight hundred nine thousand, seven hundred seven".