65117272 has 16 divisors (see below), whose sum is σ = 133194600. Its totient is φ = 29598720.

The previous prime is 65117249. The next prime is 65117279. The reversal of 65117272 is 27271156.

65117272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65117272² = 8480518225443968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65117279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369897 + ... + 370072.

Almost surely, 2^65117272 is an apocalyptic number.

It is an amenable number.

65117272 is an abundant number, since it is smaller than the sum of its proper divisors (68077328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65117272 is a wasteful number, since it uses less digits than its factorization.

65117272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739986 (or 739982 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 65117272 is about 8069.5273715379. The cubic root of 65117272 is about 402.3142349698.

The spelling of 65117272 in words is "sixty-five million, one hundred seventeen thousand, two hundred seventy-two".