65248191 has 12 divisors (see below), whose sum is σ = 94370640. Its totient is φ = 43441920.

The previous prime is 65248189. The next prime is 65248229. The reversal of 65248191 is 19184256.

It is not a de Polignac number, because 65248191 - 2¹ = 65248189 is a prime.

It is a super-3 number, since 3×65248191³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65246191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3231 + ... + 11871.

It is an arithmetic number, because the mean of its divisors is an integer number (7864220).

Almost surely, 2^65248191 is an apocalyptic number.

65248191 is a deficient number, since it is larger than the sum of its proper divisors (29122449).

65248191 is a wasteful number, since it uses less digits than its factorization.

65248191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9486 (or 9483 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 65248191 is about 8077.6352356367. The cubic root of 65248191 is about 402.5836735628.

The spelling of 65248191 in words is "sixty-five million, two hundred forty-eight thousand, one hundred ninety-one".