65655641 has 2 divisors, whose sum is σ = 65655642. Its totient is φ = 65655640.

The previous prime is 65655631. The next prime is 65655661. The reversal of 65655641 is 14655656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33120025 + 32535616 = 5755^2 + 5704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65655641 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65655595 and 65655604.

It is not a weakly prime, because it can be changed into another prime (65655631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32827820 + 32827821.

It is an arithmetic number, because the mean of its divisors is an integer number (32827821).

Almost surely, 2^65655641 is an apocalyptic number.

It is an amenable number.

65655641 is a deficient number, since it is larger than the sum of its proper divisors (1).

65655641 is an equidigital number, since it uses as much as digits as its factorization.

65655641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 38.

The square root of 65655641 is about 8102.8168558841. The cubic root of 65655641 is about 403.4199289663.

The spelling of 65655641 in words is "sixty-five million, six hundred fifty-five thousand, six hundred forty-one".