10778869 has 2 divisors, whose sum is σ = 10778870. Its totient is φ = 10778868.

The previous prime is 10778849. The next prime is 10778891. The reversal of 10778869 is 96887701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5428900 + 5349969 = 2330^2 + 2313^2 .

It is a cyclic number.

It is not a de Polignac number, because 10778869 - 2⁷ = 10778741 is a prime.

It is a super-2 number, since 2×10778869² = 232368033838322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10778819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5389434 + 5389435.

It is an arithmetic number, because the mean of its divisors is an integer number (5389435).

Almost surely, 2^10778869 is an apocalyptic number.

It is an amenable number.

10778869 is a deficient number, since it is larger than the sum of its proper divisors (1).

10778869 is an equidigital number, since it uses as much as digits as its factorization.

10778869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 10778869 is about 3283.1187916370. The cubic root of 10778869 is about 220.8976341848.

The spelling of 10778869 in words is "ten million, seven hundred seventy-eight thousand, eight hundred sixty-nine".