64122020 has 12 divisors (see below), whose sum is σ = 134656284. Its totient is φ = 25648800.

The previous prime is 64122013. The next prime is 64122031. The reversal of 64122020 is 2022146.

64122020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7661824 + 56460196 = 2768^2 + 7514^2 .

It is a super-3 number, since 3×64122020³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 64122020.

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, 1603031 + ... + 1603070.

It is an arithmetic number, because the mean of its divisors is an integer number (11221357).

Almost surely, 2^64122020 is an apocalyptic number.

It is an amenable number.

64122020 is an abundant number, since it is smaller than the sum of its proper divisors (70534264).

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

64122020 is a wasteful number, since it uses less digits than its factorization.

64122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206110 (or 3206108 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 64122020 is about 8007.6226184805. The cubic root of 64122020 is about 400.2540469495.

Adding to 64122020 its reverse (2022146), we get a palindrome (66144166).

The spelling of 64122020 in words is "sixty-four million, one hundred twenty-two thousand, twenty".