4775778 has 48 divisors (see below), whose sum is σ = 12242880. Its totient is φ = 1316448.

The previous prime is 4775747. The next prime is 4775791. The reversal of 4775778 is 8775774.

It is a happy number.

4775778 is a `hidden beast` number, since 4 + 77 + 577 + 8 = 666.

4775778 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3001 + ... + 4307.

It is an arithmetic number, because the mean of its divisors is an integer number (255060).

Almost surely, 2^4775778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4775778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6121440).

4775778 is an abundant number, since it is smaller than the sum of its proper divisors (7467102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4775778 is a wasteful number, since it uses less digits than its factorization.

4775778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1348 counting only the distinct ones).

The product of its digits is 384160, while the sum is 45.

The square root of 4775778 is about 2185.3553486790. The cubic root of 4775778 is about 168.4023096296.

The spelling of 4775778 in words is "four million, seven hundred seventy-five thousand, seven hundred seventy-eight".