538784065 has 8 divisors (see below), whose sum is σ = 648036648. Its totient is φ = 430030080.

The previous prime is 538784063. The next prime is 538784087. The reversal of 538784065 is 560487835.

It can be written as a sum of positive squares in 4 ways, for example, as 11209104 + 527574961 = 3348^2 + 22969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 538784065 - 2¹ = 538784063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538784063) 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, 122266 + ... + 126595.

It is an arithmetic number, because the mean of its divisors is an integer number (81004581).

Almost surely, 2^538784065 is an apocalyptic number.

It is an amenable number.

538784065 is a deficient number, since it is larger than the sum of its proper divisors (109252583).

538784065 is a wasteful number, since it uses less digits than its factorization.

538784065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249299.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 538784065 is about 23211.7225771807. The cubic root of 538784065 is about 813.7136116804.

The spelling of 538784065 in words is "five hundred thirty-eight million, seven hundred eighty-four thousand, sixty-five".