65534220 has 36 divisors (see below), whose sum is σ = 198787680. Its totient is φ = 17475744.

The previous prime is 65534111. The next prime is 65534239. The reversal of 65534220 is 2243556.

65534220 is a `hidden beast` number, since 655 + 3 + 4 + 2 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181860 + ... + 182219.

It is an arithmetic number, because the mean of its divisors is an integer number (5521880).

Almost surely, 2^65534220 is an apocalyptic number.

65534220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65534220 is an abundant number, since it is smaller than the sum of its proper divisors (133253460).

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

65534220 is a wasteful number, since it uses less digits than its factorization.

65534220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364094 (or 364089 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 65534220 is about 8095.3208707253. The cubic root of 65534220 is about 403.1710857714.

Adding to 65534220 its reverse (2243556), we get a palindrome (67777776).

The spelling of 65534220 in words is "sixty-five million, five hundred thirty-four thousand, two hundred twenty".