65939903 has 2 divisors, whose sum is σ = 65939904. Its totient is φ = 65939902.

The previous prime is 65939891. The next prime is 65939911. The reversal of 65939903 is 30993956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65939903 - 2²² = 61745599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65939953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32969951 + 32969952.

It is an arithmetic number, because the mean of its divisors is an integer number (32969952).

Almost surely, 2^65939903 is an apocalyptic number.

65939903 is a deficient number, since it is larger than the sum of its proper divisors (1).

65939903 is an equidigital number, since it uses as much as digits as its factorization.

65939903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 65939903 is about 8120.3388476097. The cubic root of 65939903 is about 404.0013050149.

The spelling of 65939903 in words is "sixty-five million, nine hundred thirty-nine thousand, nine hundred three".