220689037 has 2 divisors, whose sum is σ = 220689038. Its totient is φ = 220689036.

The previous prime is 220689011. The next prime is 220689059. The reversal of 220689037 is 730986022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144144036 + 76545001 = 12006^2 + 8749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220689037 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 220688987 and 220689005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220689097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110344518 + 110344519.

It is an arithmetic number, because the mean of its divisors is an integer number (110344519).

Almost surely, 2^220689037 is an apocalyptic number.

It is an amenable number.

220689037 is a deficient number, since it is larger than the sum of its proper divisors (1).

220689037 is an equidigital number, since it uses as much as digits as its factorization.

220689037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 220689037 is about 14855.6062481475. The cubic root of 220689037 is about 604.3106571512.

The spelling of 220689037 in words is "two hundred twenty million, six hundred eighty-nine thousand, thirty-seven".