534515665 has 4 divisors (see below), whose sum is σ = 641418804. Its totient is φ = 427612528.

The previous prime is 534515627. The next prime is 534515669. The reversal of 534515665 is 566515435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279825984 + 254689681 = 16728^2 + 15959^2 .

It is a cyclic number.

It is not a de Polignac number, because 534515665 - 2¹³ = 534507473 is a prime.

It is a super-2 number, since 2×534515665² = 571413992260784450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (534515669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53451562 + ... + 53451571.

It is an arithmetic number, because the mean of its divisors is an integer number (160354701).

Almost surely, 2^534515665 is an apocalyptic number.

It is an amenable number.

534515665 is a deficient number, since it is larger than the sum of its proper divisors (106903139).

534515665 is a wasteful number, since it uses less digits than its factorization.

534515665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106903138.

The product of its digits is 270000, while the sum is 40.

The square root of 534515665 is about 23119.5948277646. The cubic root of 534515665 is about 811.5590887917.

The spelling of 534515665 in words is "five hundred thirty-four million, five hundred fifteen thousand, six hundred sixty-five".