65133238 has 8 divisors (see below), whose sum is σ = 99301680. Its totient is φ = 32032680.

The previous prime is 65133221. The next prime is 65133247. The reversal of 65133238 is 83233156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266818 + ... + 267061.

It is an arithmetic number, because the mean of its divisors is an integer number (12412710).

Almost surely, 2^65133238 is an apocalyptic number.

65133238 is a deficient number, since it is larger than the sum of its proper divisors (34168442).

65133238 is a wasteful number, since it uses less digits than its factorization.

65133238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533942.

The product of its digits is 12960, while the sum is 31.

The square root of 65133238 is about 8070.5165881745. The cubic root of 65133238 is about 402.3471132112.

The spelling of 65133238 in words is "sixty-five million, one hundred thirty-three thousand, two hundred thirty-eight".