65391349 has 2 divisors, whose sum is σ = 65391350. Its totient is φ = 65391348.

The previous prime is 65391343. The next prime is 65391373. The reversal of 65391349 is 94319356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64915249 + 476100 = 8057^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 65391349 - 2³ = 65391341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65391341) 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, 32695674 + 32695675.

It is an arithmetic number, because the mean of its divisors is an integer number (32695675).

Almost surely, 2^65391349 is an apocalyptic number.

It is an amenable number.

65391349 is a deficient number, since it is larger than the sum of its proper divisors (1).

65391349 is an equidigital number, since it uses as much as digits as its factorization.

65391349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 65391349 is about 8086.4917609554. The cubic root of 65391349 is about 402.8778884876.

The spelling of 65391349 in words is "sixty-five million, three hundred ninety-one thousand, three hundred forty-nine".