38668365 has 12 divisors (see below), whose sum is σ = 67025244. Its totient is φ = 20623104.

The previous prime is 38668361. The next prime is 38668373. The reversal of 38668365 is 56386683.

It can be written as a sum of positive squares in 2 ways, for example, as 19954089 + 18714276 = 4467^2 + 4326^2 .

It is not a de Polignac number, because 38668365 - 2² = 38668361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 859297 = 38668365 / (3 + 8 + 6 + 6 + 8 + 3 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38668365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38668361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429604 + ... + 429693.

It is an arithmetic number, because the mean of its divisors is an integer number (5585437).

Almost surely, 2^38668365 is an apocalyptic number.

It is an amenable number.

38668365 is a deficient number, since it is larger than the sum of its proper divisors (28356879).

38668365 is a wasteful number, since it uses less digits than its factorization.

38668365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859308 (or 859305 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 38668365 is about 6218.3892608939. The cubic root of 38668365 is about 338.1571722138.

The spelling of 38668365 in words is "thirty-eight million, six hundred sixty-eight thousand, three hundred sixty-five".