64800280 has 32 divisors (see below), whose sum is σ = 147860640. Its totient is φ = 25553920.

The previous prime is 64800257. The next prime is 64800301. The reversal of 64800280 is 8200846.

64800280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8569 + ... + 14248.

It is an arithmetic number, because the mean of its divisors is an integer number (4620645).

Almost surely, 2^64800280 is an apocalyptic number.

It is an amenable number.

64800280 is an abundant number, since it is smaller than the sum of its proper divisors (83060360).

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

64800280 is a wasteful number, since it uses less digits than its factorization.

64800280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22899 (or 22895 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 64800280 is about 8049.8621106203. The cubic root of 64800280 is about 401.6603485708.

The spelling of 64800280 in words is "sixty-four million, eight hundred thousand, two hundred eighty".