2206669 has 2 divisors, whose sum is σ = 2206670. Its totient is φ = 2206668.

The previous prime is 2206663. The next prime is 2206681. The reversal of 2206669 is 9666022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 1444 = 1485^2 + 38^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206669 - 2¹³ = 2198477 is a prime.

It is a super-2 number, since 2×2206669² = 9738776151122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2206669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2206663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1103334 + 1103335.

It is an arithmetic number, because the mean of its divisors is an integer number (1103335).

2^2206669 is an apocalyptic number.

It is an amenable number.

2206669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206669 is an equidigital number, since it uses as much as digits as its factorization.

2206669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2206669 is about 1485.4861157210. The cubic root of 2206669 is about 130.1904309695.

It can be divided in two parts, 220 and 6669, that added together give a square (6889 = 83²).

The spelling of 2206669 in words is "two million, two hundred six thousand, six hundred sixty-nine".