65238757 has 4 divisors (see below), whose sum is σ = 65752576. Its totient is φ = 64724940.

The previous prime is 65238737. The next prime is 65238769. The reversal of 65238757 is 75783256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65238757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65238727) 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 in 3 ways as a sum of consecutive naturals, for example, 256719 + ... + 256972.

It is an arithmetic number, because the mean of its divisors is an integer number (16438144).

Almost surely, 2^65238757 is an apocalyptic number.

It is an amenable number.

65238757 is a deficient number, since it is larger than the sum of its proper divisors (513819).

65238757 is a wasteful number, since it uses less digits than its factorization.

65238757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513818.

The product of its digits is 352800, while the sum is 43.

The square root of 65238757 is about 8077.0512564921. The cubic root of 65238757 is about 402.5642699217.

The spelling of 65238757 in words is "sixty-five million, two hundred thirty-eight thousand, seven hundred fifty-seven".