2278069 has 2 divisors, whose sum is σ = 2278070. Its totient is φ = 2278068.

The previous prime is 2278063. The next prime is 2278079. The reversal of 2278069 is 9608722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2137444 + 140625 = 1462^2 + 375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278069 - 2⁷ = 2277941 is a prime.

It is a super-2 number, since 2×2278069² = 10379196737522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139034 + 1139035.

It is an arithmetic number, because the mean of its divisors is an integer number (1139035).

2^2278069 is an apocalyptic number.

It is an amenable number.

2278069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278069 is an equidigital number, since it uses as much as digits as its factorization.

2278069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 2278069 is about 1509.3273336159. The cubic root of 2278069 is about 131.5797200544.

The spelling of 2278069 in words is "two million, two hundred seventy-eight thousand, sixty-nine".