65473280 has 36 divisors (see below), whose sum is σ = 156832032. Its totient is φ = 26188800.

The previous prime is 65473279. The next prime is 65473301. The reversal of 65473280 is 8237456.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65473280.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24296 + ... + 26855.

Almost surely, 2^65473280 is an apocalyptic number.

It is an amenable number.

65473280 is an abundant number, since it is smaller than the sum of its proper divisors (91358752).

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

65473280 is an equidigital number, since it uses as much as digits as its factorization.

65473280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51172 (or 51158 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 65473280 is about 8091.5560926190. The cubic root of 65473280 is about 403.0460779739.

The spelling of 65473280 in words is "sixty-five million, four hundred seventy-three thousand, two hundred eighty".