65371939 has 2 divisors, whose sum is σ = 65371940. Its totient is φ = 65371938.

The previous prime is 65371909. The next prime is 65371981. The reversal of 65371939 is 93917356.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65371939 - 2⁷ = 65371811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65371895 and 65371904.

It is not a weakly prime, because it can be changed into another prime (65371909) 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, 32685969 + 32685970.

It is an arithmetic number, because the mean of its divisors is an integer number (32685970).

Almost surely, 2^65371939 is an apocalyptic number.

65371939 is a deficient number, since it is larger than the sum of its proper divisors (1).

65371939 is an equidigital number, since it uses as much as digits as its factorization.

65371939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153090, while the sum is 43.

The square root of 65371939 is about 8085.2915222644. The cubic root of 65371939 is about 402.8380226961.

The spelling of 65371939 in words is "sixty-five million, three hundred seventy-one thousand, nine hundred thirty-nine".