65361899 has 2 divisors, whose sum is σ = 65361900. Its totient is φ = 65361898.

The previous prime is 65361887. The next prime is 65361931. The reversal of 65361899 is 99816356.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65361899 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (65361839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32680949 + 32680950.

It is an arithmetic number, because the mean of its divisors is an integer number (32680950).

Almost surely, 2^65361899 is an apocalyptic number.

65361899 is a deficient number, since it is larger than the sum of its proper divisors (1).

65361899 is an equidigital number, since it uses as much as digits as its factorization.

65361899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 65361899 is about 8084.6706179040. The cubic root of 65361899 is about 402.8173986542.

The spelling of 65361899 in words is "sixty-five million, three hundred sixty-one thousand, eight hundred ninety-nine".