65299272 has 32 divisors (see below), whose sum is σ = 165688800. Its totient is φ = 21441024.

The previous prime is 65299249. The next prime is 65299279. The reversal of 65299272 is 27299256.

It is not an unprimeable number, because it can be changed into a prime (65299279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18697 + ... + 21912.

It is an arithmetic number, because the mean of its divisors is an integer number (5177775).

Almost surely, 2^65299272 is an apocalyptic number.

It is an amenable number.

65299272 is an abundant number, since it is smaller than the sum of its proper divisors (100389528).

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

65299272 is a wasteful number, since it uses less digits than its factorization.

65299272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40685 (or 40681 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 65299272 is about 8080.7964953957. The cubic root of 65299272 is about 402.6887033586.

The spelling of 65299272 in words is "sixty-five million, two hundred ninety-nine thousand, two hundred seventy-two".