10778 has 8 divisors (see below), whose sum is σ = 17172. Its totient is φ = 5056.

The previous prime is 10771. The next prime is 10781. The reversal of 10778 is 87701.

It can be written as a sum of positive squares in 2 ways, for example, as 10609 + 169 = 103^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10771) by changing a digit.

10778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 192.

2¹⁰⁷⁷⁸ is an apocalyptic number.

10778 is a deficient number, since it is larger than the sum of its proper divisors (6394).

10778 is a wasteful number, since it uses less digits than its factorization.

10778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 10778 is about 103.8171469460. The cubic root of 10778 is about 22.0891697718.

Adding to 10778 its sum of digits (23), we get a palindrome (10801).

The spelling of 10778 in words is "ten thousand, seven hundred seventy-eight".