65612272 has 20 divisors (see below), whose sum is σ = 138680856. Its totient is φ = 29823680.

The previous prime is 65612257. The next prime is 65612273. The reversal of 65612272 is 27221656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65612273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186223 + ... + 186574.

Almost surely, 2^65612272 is an apocalyptic number.

It is an amenable number.

65612272 is an abundant number, since it is smaller than the sum of its proper divisors (73068584).

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

65612272 is a wasteful number, since it uses less digits than its factorization.

65612272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372816 (or 372810 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 65612272 is about 8100.1402456995. The cubic root of 65612272 is about 403.3310827155.

The spelling of 65612272 in words is "sixty-five million, six hundred twelve thousand, two hundred seventy-two".