65428560 has 200 divisors, whose sum is σ = 237663360. Its totient is φ = 16651008.

The previous prime is 65428549. The next prime is 65428577. The reversal of 65428560 is 6582456.

65428560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 39 ways as a sum of consecutive naturals, for example, 148821 + ... + 149259.

Almost surely, 2^65428560 is an apocalyptic number.

65428560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65428560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118831680).

65428560 is an abundant number, since it is smaller than the sum of its proper divisors (172234800).

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

65428560 is a wasteful number, since it uses less digits than its factorization.

65428560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 65428560 is about 8088.7922460649. The cubic root of 65428560 is about 402.9542933261.

The spelling of 65428560 in words is "sixty-five million, four hundred twenty-eight thousand, five hundred sixty".