65146220 has 24 divisors (see below), whose sum is σ = 138348000. Its totient is φ = 25764992.

The previous prime is 65146217. The next prime is 65146271. The reversal of 65146220 is 2264156.

65146220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 65146220.

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, 16520 + ... + 20079.

It is an arithmetic number, because the mean of its divisors is an integer number (5764500).

Almost surely, 2^65146220 is an apocalyptic number.

It is an amenable number.

65146220 is an abundant number, since it is smaller than the sum of its proper divisors (73201780).

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

65146220 is a wasteful number, since it uses less digits than its factorization.

65146220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36697 (or 36695 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 65146220 is about 8071.3208336678. The cubic root of 65146220 is about 402.3738426425.

The spelling of 65146220 in words is "sixty-five million, one hundred forty-six thousand, two hundred twenty".