65356420 has 24 divisors (see below), whose sum is σ = 139840344. Its totient is φ = 25648896.

The previous prime is 65356397. The next prime is 65356427. The reversal of 65356420 is 2465356.

It can be written as a sum of positive squares in 4 ways, for example, as 11451456 + 53904964 = 3384^2 + 7342^2 .

It is not an unprimeable number, because it can be changed into a prime (65356427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29769 + ... + 31888.

It is an arithmetic number, because the mean of its divisors is an integer number (5826681).

Almost surely, 2^65356420 is an apocalyptic number.

It is an amenable number.

65356420 is an abundant number, since it is smaller than the sum of its proper divisors (74483924).

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

65356420 is a wasteful number, since it uses less digits than its factorization.

65356420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61719 (or 61717 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 65356420 is about 8084.3317596447. The cubic root of 65356420 is about 402.8061428705.

The spelling of 65356420 in words is "sixty-five million, three hundred fifty-six thousand, four hundred twenty".