65606641 has 2 divisors, whose sum is σ = 65606642. Its totient is φ = 65606640.

The previous prime is 65606623. The next prime is 65606647. The reversal of 65606641 is 14660656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65270241 + 336400 = 8079^2 + 580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65606641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65606597 and 65606606.

It is not a weakly prime, because it can be changed into another prime (65606647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32803320 + 32803321.

It is an arithmetic number, because the mean of its divisors is an integer number (32803321).

Almost surely, 2^65606641 is an apocalyptic number.

It is an amenable number.

65606641 is a deficient number, since it is larger than the sum of its proper divisors (1).

65606641 is an equidigital number, since it uses as much as digits as its factorization.

65606641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 65606641 is about 8099.7926516671. The cubic root of 65606641 is about 403.3195441104.

The spelling of 65606641 in words is "sixty-five million, six hundred six thousand, six hundred forty-one".