65902261 has 2 divisors, whose sum is σ = 65902262. Its totient is φ = 65902260.

The previous prime is 65902247. The next prime is 65902321. The reversal of 65902261 is 16220956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46321636 + 19580625 = 6806^2 + 4425^2 .

It is a cyclic number.

It is not a de Polignac number, because 65902261 - 2⁵ = 65902229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65902201) 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 as a sum of consecutive naturals, namely, 32951130 + 32951131.

It is an arithmetic number, because the mean of its divisors is an integer number (32951131).

Almost surely, 2^65902261 is an apocalyptic number.

It is an amenable number.

65902261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65902261 is an equidigital number, since it uses as much as digits as its factorization.

65902261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 65902261 is about 8118.0207563174. The cubic root of 65902261 is about 403.9244152457.

The spelling of 65902261 in words is "sixty-five million, nine hundred two thousand, two hundred sixty-one".