38660565 has 32 divisors (see below), whose sum is σ = 64806912. Its totient is φ = 19656000.

The previous prime is 38660563. The next prime is 38660579. The reversal of 38660565 is 56506683.

It is not a de Polignac number, because 38660565 - 2¹ = 38660563 is a prime.

It is a super-2 number, since 2×38660565² = 2989278572238450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38660561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32430 + ... + 33600.

It is an arithmetic number, because the mean of its divisors is an integer number (2025216).

Almost surely, 2^38660565 is an apocalyptic number.

It is an amenable number.

38660565 is a deficient number, since it is larger than the sum of its proper divisors (26146347).

38660565 is a wasteful number, since it uses less digits than its factorization.

38660565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 38660565 is about 6217.7620572035. The cubic root of 38660565 is about 338.1344335288.

The spelling of 38660565 in words is "thirty-eight million, six hundred sixty thousand, five hundred sixty-five".