65654689 has 2 divisors, whose sum is σ = 65654690. Its totient is φ = 65654688.

The previous prime is 65654681. The next prime is 65654717. The reversal of 65654689 is 98645656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 8803089 = 7540^2 + 2967^2 .

It is a cyclic number.

It is not a de Polignac number, because 65654689 - 2³ = 65654681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65654681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32827344 + 32827345.

It is an arithmetic number, because the mean of its divisors is an integer number (32827345).

Almost surely, 2^65654689 is an apocalyptic number.

It is an amenable number.

65654689 is a deficient number, since it is larger than the sum of its proper divisors (1).

65654689 is an equidigital number, since it uses as much as digits as its factorization.

65654689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 49.

The square root of 65654689 is about 8102.7581106682. The cubic root of 65654689 is about 403.4179791078.

The spelling of 65654689 in words is "sixty-five million, six hundred fifty-four thousand, six hundred eighty-nine".