65470261 has 2 divisors, whose sum is σ = 65470262. Its totient is φ = 65470260.

The previous prime is 65470243. The next prime is 65470267. The reversal of 65470261 is 16207456.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 11902500 = 7319^2 + 3450^2 .

It is a cyclic number.

It is not a de Polignac number, because 65470261 - 2⁷ = 65470133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65470267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32735130 + 32735131.

It is an arithmetic number, because the mean of its divisors is an integer number (32735131).

Almost surely, 2^65470261 is an apocalyptic number.

It is an amenable number.

65470261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65470261 is an equidigital number, since it uses as much as digits as its factorization.

65470261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 65470261 is about 8091.3695379707. The cubic root of 65470261 is about 403.0398830049.

The spelling of 65470261 in words is "sixty-five million, four hundred seventy thousand, two hundred sixty-one".