65651020 has 12 divisors (see below), whose sum is σ = 137867184. Its totient is φ = 26260400.

The previous prime is 65650979. The next prime is 65651063. The reversal of 65651020 is 2015656.

65651020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 1641256 + ... + 1641295.

It is an arithmetic number, because the mean of its divisors is an integer number (11488932).

Almost surely, 2^65651020 is an apocalyptic number.

It is an amenable number.

65651020 is an abundant number, since it is smaller than the sum of its proper divisors (72216164).

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

65651020 is a wasteful number, since it uses less digits than its factorization.

65651020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282560 (or 3282558 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 65651020 is about 8102.5317031160. The cubic root of 65651020 is about 403.4104641933.

Adding to 65651020 its reverse (2015656), we get a palindrome (67666676).

The spelling of 65651020 in words is "sixty-five million, six hundred fifty-one thousand, twenty".