65144147 has 2 divisors, whose sum is σ = 65144148. Its totient is φ = 65144146.

The previous prime is 65144143. The next prime is 65144197. The reversal of 65144147 is 74144156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65144147 - 2² = 65144143 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65144143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32572073 + 32572074.

It is an arithmetic number, because the mean of its divisors is an integer number (32572074).

Almost surely, 2^65144147 is an apocalyptic number.

65144147 is a deficient number, since it is larger than the sum of its proper divisors (1).

65144147 is an equidigital number, since it uses as much as digits as its factorization.

65144147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The square root of 65144147 is about 8071.1924150029. The cubic root of 65144147 is about 402.3695746547.

Subtracting 65144147 from its reverse (74144156), we obtain a palindrome (9000009).

The spelling of 65144147 in words is "sixty-five million, one hundred forty-four thousand, one hundred forty-seven".