65775228 has 24 divisors (see below), whose sum is σ = 153869520. Its totient is φ = 21868800.

The previous prime is 65775209. The next prime is 65775247. The reversal of 65775228 is 82257756.

It is an interprime number because it is at equal distance from previous prime (65775209) and next prime (65775247).

It is a self number, because there is not a number n which added to its sum of digits gives 65775228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023 + ... + 11646.

It is an arithmetic number, because the mean of its divisors is an integer number (6411230).

Almost surely, 2^65775228 is an apocalyptic number.

It is an amenable number.

65775228 is an abundant number, since it is smaller than the sum of its proper divisors (88094292).

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

65775228 is a wasteful number, since it uses less digits than its factorization.

65775228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14077 (or 14075 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The square root of 65775228 is about 8110.1928460426. The cubic root of 65775228 is about 403.6647138118.

The spelling of 65775228 in words is "sixty-five million, seven hundred seventy-five thousand, two hundred twenty-eight".