65200019 has 2 divisors, whose sum is σ = 65200020. Its totient is φ = 65200018.

The previous prime is 65200013. The next prime is 65200061. The reversal of 65200019 is 91000256.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65200019 is a prime.

It is a super-2 number, since 2×65200019² = 8502084955200722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65199967 and 65200003.

It is not a weakly prime, because it can be changed into another prime (65200013) 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, 32600009 + 32600010.

It is an arithmetic number, because the mean of its divisors is an integer number (32600010).

Almost surely, 2^65200019 is an apocalyptic number.

65200019 is a deficient number, since it is larger than the sum of its proper divisors (1).

65200019 is an equidigital number, since it uses as much as digits as its factorization.

65200019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 65200019 is about 8074.6528717958. The cubic root of 65200019 is about 402.4845748496.

It can be divided in two parts, 6 and 5200019, that added together give a palindrome (5200025).

The spelling of 65200019 in words is "sixty-five million, two hundred thousand, nineteen".