65530939 has 2 divisors, whose sum is σ = 65530940. Its totient is φ = 65530938.

The previous prime is 65530889. The next prime is 65530957. The reversal of 65530939 is 93903556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65530939 - 2²¹ = 63433787 is a prime.

It is not a weakly prime, because it can be changed into another prime (65530999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32765469 + 32765470.

It is an arithmetic number, because the mean of its divisors is an integer number (32765470).

Almost surely, 2^65530939 is an apocalyptic number.

65530939 is a deficient number, since it is larger than the sum of its proper divisors (1).

65530939 is an equidigital number, since it uses as much as digits as its factorization.

65530939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 40.

The square root of 65530939 is about 8095.1182202609. The cubic root of 65530939 is about 403.1643573456.

The spelling of 65530939 in words is "sixty-five million, five hundred thirty thousand, nine hundred thirty-nine".