38668565 has 16 divisors (see below), whose sum is σ = 50495088. Its totient is φ = 28256256.

The previous prime is 38668559. The next prime is 38668577. The reversal of 38668565 is 56586683.

It can be written as a sum of positive squares in 8 ways, for example, as 5041 + 38663524 = 71^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 38668565 - 2¹² = 38664469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3239 + ... + 9371.

It is an arithmetic number, because the mean of its divisors is an integer number (3155943).

Almost surely, 2^38668565 is an apocalyptic number.

It is an amenable number.

38668565 is a deficient number, since it is larger than the sum of its proper divisors (11826523).

38668565 is a wasteful number, since it uses less digits than its factorization.

38668565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248.

The product of its digits is 1036800, while the sum is 47.

The square root of 38668565 is about 6218.4053422079. The cubic root of 38668565 is about 338.1577552168.

The spelling of 38668565 in words is "thirty-eight million, six hundred sixty-eight thousand, five hundred sixty-five".