4778 has 4 divisors (see below), whose sum is σ = 7170. Its totient is φ = 2388.

The previous prime is 4759. The next prime is 4783. The reversal of 4778 is 8774.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4489 + 289 = 67^2 + 17^2 .

It is a plaindrome in base 10, base 13 and base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1193 + ... + 1196.

2⁴⁷⁷⁸ is an apocalyptic number.

4778 is a deficient number, since it is larger than the sum of its proper divisors (2392).

4778 is a wasteful number, since it uses less digits than its factorization.

4778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391.

The product of its digits is 1568, while the sum is 26.

The square root of 4778 is about 69.1230786351. The cubic root of 4778 is about 16.8428422786.

It can be divided in two parts, 47 and 78, that added together give a cube (125 = 5³).

The spelling of 4778 in words is "four thousand, seven hundred seventy-eight".