65844228 has 12 divisors (see below), whose sum is σ = 153636560. Its totient is φ = 21948072.

The previous prime is 65844221. The next prime is 65844241. The reversal of 65844228 is 82244856.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (65844221) 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, 2743498 + ... + 2743521.

Almost surely, 2^65844228 is an apocalyptic number.

It is an amenable number.

65844228 is an abundant number, since it is smaller than the sum of its proper divisors (87792332).

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

65844228 is a wasteful number, since it uses less digits than its factorization.

65844228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5487026 (or 5487024 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 65844228 is about 8114.4456372571. The cubic root of 65844228 is about 403.8058162313.

The spelling of 65844228 in words is "sixty-five million, eight hundred forty-four thousand, two hundred twenty-eight".