2220697 has 2 divisors, whose sum is σ = 2220698. Its totient is φ = 2220696.

The previous prime is 2220671. The next prime is 2220731. The reversal of 2220697 is 7960222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1879641 + 341056 = 1371^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220697 - 2¹⁵ = 2187929 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110348 + 1110349.

It is an arithmetic number, because the mean of its divisors is an integer number (1110349).

2^2220697 is an apocalyptic number.

It is an amenable number.

2220697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220697 is an equidigital number, since it uses as much as digits as its factorization.

2220697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2220697 is about 1490.2003221044. The cubic root of 2220697 is about 130.4657259904.

The spelling of 2220697 in words is "two million, two hundred twenty thousand, six hundred ninety-seven".