65167261 has 2 divisors, whose sum is σ = 65167262. Its totient is φ = 65167260.

The previous prime is 65167247. The next prime is 65167331. The reversal of 65167261 is 16276156.

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., 64096036 + 1071225 = 8006^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 65167261 - 2⁹ = 65166749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65167061) 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, 32583630 + 32583631.

It is an arithmetic number, because the mean of its divisors is an integer number (32583631).

Almost surely, 2^65167261 is an apocalyptic number.

It is an amenable number.

65167261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65167261 is an equidigital number, since it uses as much as digits as its factorization.

65167261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 65167261 is about 8072.6241706152. The cubic root of 65167261 is about 402.4171576995.

The spelling of 65167261 in words is "sixty-five million, one hundred sixty-seven thousand, two hundred sixty-one".