65144797 has 2 divisors, whose sum is σ = 65144798. Its totient is φ = 65144796.

The previous prime is 65144789. The next prime is 65144851. The reversal of 65144797 is 79744156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44542276 + 20602521 = 6674^2 + 4539^2 .

It is a cyclic number.

It is not a de Polignac number, because 65144797 - 2³ = 65144789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65144197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32572398 + 32572399.

It is an arithmetic number, because the mean of its divisors is an integer number (32572399).

Almost surely, 2^65144797 is an apocalyptic number.

It is an amenable number.

65144797 is a deficient number, since it is larger than the sum of its proper divisors (1).

65144797 is an equidigital number, since it uses as much as digits as its factorization.

65144797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 65144797 is about 8071.2326815673. The cubic root of 65144797 is about 402.3709129144.

It can be divided in two parts, 6514 and 4797, that added together give a palindrome (11311).

The spelling of 65144797 in words is "sixty-five million, one hundred forty-four thousand, seven hundred ninety-seven".