4778565 has 16 divisors (see below), whose sum is σ = 8341056. Its totient is φ = 2316800.

The previous prime is 4778539. The next prime is 4778567. The reversal of 4778565 is 5658774.

It is not a de Polignac number, because 4778565 - 2⁷ = 4778437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14316 + ... + 14645.

It is an arithmetic number, because the mean of its divisors is an integer number (521316).

Almost surely, 2^4778565 is an apocalyptic number.

It is an amenable number.

4778565 is a deficient number, since it is larger than the sum of its proper divisors (3562491).

4778565 is a wasteful number, since it uses less digits than its factorization.

4778565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28980.

The product of its digits is 235200, while the sum is 42.

The square root of 4778565 is about 2185.9929094121. The cubic root of 4778565 is about 168.4350614290.

The spelling of 4778565 in words is "four million, seven hundred seventy-eight thousand, five hundred sixty-five".