65245663 has 18 divisors (see below), whose sum is σ = 77431272. Its totient is φ = 53854920.

The previous prime is 65245657. The next prime is 65245667. The reversal of 65245663 is 36654256.

It is a de Polignac number, because none of the positive numbers 2^k-65245663 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65245667) 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 17 ways as a sum of consecutive naturals, for example, 918918 + ... + 918988.

Almost surely, 2^65245663 is an apocalyptic number.

65245663 is a deficient number, since it is larger than the sum of its proper divisors (12185609).

65245663 is an frugal number, since it uses more digits than its factorization.

65245663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 121 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 65245663 is about 8077.4787526802. The cubic root of 65245663 is about 402.5784742121.

The spelling of 65245663 in words is "sixty-five million, two hundred forty-five thousand, six hundred sixty-three".