65398811 has 2 divisors, whose sum is σ = 65398812. Its totient is φ = 65398810.

The previous prime is 65398783. The next prime is 65398819. The reversal of 65398811 is 11889356.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65398811 is a prime.

It is not a weakly prime, because it can be changed into another prime (65398819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32699405 + 32699406.

It is an arithmetic number, because the mean of its divisors is an integer number (32699406).

Almost surely, 2^65398811 is an apocalyptic number.

65398811 is a deficient number, since it is larger than the sum of its proper divisors (1).

65398811 is an equidigital number, since it uses as much as digits as its factorization.

65398811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 65398811 is about 8086.9531345248. The cubic root of 65398811 is about 402.8932124334.

The spelling of 65398811 in words is "sixty-five million, three hundred ninety-eight thousand, eight hundred eleven".