538857665 has 8 divisors (see below), whose sum is σ = 647127360. Its totient is φ = 430754032.

The previous prime is 538857647. The next prime is 538857667. The reversal of 538857665 is 566758835.

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 538857665 - 2¹² = 538853569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538857667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34259 + ... + 47448.

It is an arithmetic number, because the mean of its divisors is an integer number (80890920).

Almost surely, 2^538857665 is an apocalyptic number.

It is an amenable number.

538857665 is a deficient number, since it is larger than the sum of its proper divisors (108269695).

538857665 is a wasteful number, since it uses less digits than its factorization.

538857665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83031.

The product of its digits is 6048000, while the sum is 53.

The square root of 538857665 is about 23213.3079288584. The cubic root of 538857665 is about 813.7506621420.

The spelling of 538857665 in words is "five hundred thirty-eight million, eight hundred fifty-seven thousand, six hundred sixty-five".