65227627609 has 9 divisors (see below), whose sum is σ = 65777984181. Its totient is φ = 64681844220.

The previous prime is 65227627601. The next prime is 65227627643. The reversal of 65227627609 is 90672672256.

The square root of 65227627609 is 255397.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 65227627609 - 2³ = 65227627601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65227627601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32434414 + ... + 32436424.

It is an arithmetic number, because the mean of its divisors is an integer number (7308664909).

Almost surely, 2^65227627609 is an apocalyptic number.

65227627609 is the 255397-th square number.

65227627609 is the 127699-th centered octagonal number.

It is an amenable number.

65227627609 is a deficient number, since it is larger than the sum of its proper divisors (550356572).

65227627609 is an frugal number, since it uses more digits than its factorization.

65227627609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 65227627609 in words is "sixty-five billion, two hundred twenty-seven million, six hundred twenty-seven thousand, six hundred nine".