65561595 has 32 divisors (see below), whose sum is σ = 117538560. Its totient is φ = 30925440.

The previous prime is 65561593. The next prime is 65561597. The reversal of 65561595 is 59516556.

It is an interprime number because it is at equal distance from previous prime (65561593) and next prime (65561597).

It is not a de Polignac number, because 65561595 - 2¹ = 65561593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65561593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 736 + ... + 11474.

It is an arithmetic number, because the mean of its divisors is an integer number (3673080).

Almost surely, 2^65561595 is an apocalyptic number.

65561595 is a deficient number, since it is larger than the sum of its proper divisors (51976965).

65561595 is a wasteful number, since it uses less digits than its factorization.

65561595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10795.

The product of its digits is 202500, while the sum is 42.

The square root of 65561595 is about 8097.0114857273. The cubic root of 65561595 is about 403.2272155922.

The spelling of 65561595 in words is "sixty-five million, five hundred sixty-one thousand, five hundred ninety-five".