530661865 has 16 divisors (see below), whose sum is σ = 687398400. Its totient is φ = 392066752.

The previous prime is 530661863. The next prime is 530661889. The reversal of 530661865 is 568166035.

It is a cyclic number.

It is not a de Polignac number, because 530661865 - 2¹ = 530661863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (530661863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76225 + ... + 82894.

It is an arithmetic number, because the mean of its divisors is an integer number (42962400).

Almost surely, 2^530661865 is an apocalyptic number.

It is an amenable number.

530661865 is a deficient number, since it is larger than the sum of its proper divisors (156736535).

530661865 is a wasteful number, since it uses less digits than its factorization.

530661865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159176.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 530661865 is about 23036.0991706495. The cubic root of 530661865 is about 809.6039648080.

The spelling of 530661865 in words is "five hundred thirty million, six hundred sixty-one thousand, eight hundred sixty-five".