65570028 has 48 divisors (see below), whose sum is σ = 155796480. Its totient is φ = 21461184.

The previous prime is 65570023. The next prime is 65570039. The reversal of 65570028 is 82007556.

It is a happy number.

65570028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) 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 (65570023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 286218 + ... + 286446.

It is an arithmetic number, because the mean of its divisors is an integer number (3245760).

Almost surely, 2^65570028 is an apocalyptic number.

It is an amenable number.

65570028 is an abundant number, since it is smaller than the sum of its proper divisors (90226452).

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

65570028 is a wasteful number, since it uses less digits than its factorization.

65570028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 65570028 is about 8097.5322166695. The cubic root of 65570028 is about 403.2445035045.

The spelling of 65570028 in words is "sixty-five million, five hundred seventy thousand, twenty-eight".