4378565 has 8 divisors (see below), whose sum is σ = 5435640. Its totient is φ = 3381952.

The previous prime is 4378559. The next prime is 4378609. The reversal of 4378565 is 5658734.

It can be written as a sum of positive squares in 4 ways, for example, as 188356 + 4190209 = 434^2 + 2047^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4378565 - 2¹⁴ = 4362181 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14954 + ... + 15243.

It is an arithmetic number, because the mean of its divisors is an integer number (679455).

Almost surely, 2^4378565 is an apocalyptic number.

It is an amenable number.

4378565 is a deficient number, since it is larger than the sum of its proper divisors (1057075).

4378565 is a wasteful number, since it uses less digits than its factorization.

4378565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30231.

The product of its digits is 100800, while the sum is 38.

The square root of 4378565 is about 2092.5020907994. The cubic root of 4378565 is about 163.5977276442.

The spelling of 4378565 in words is "four million, three hundred seventy-eight thousand, five hundred sixty-five".