64168420 has 12 divisors (see below), whose sum is σ = 134753724. Its totient is φ = 25667360.

The previous prime is 64168411. The next prime is 64168441. The reversal of 64168420 is 2486146.

64168420 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 33454656 + 30713764 = 5784^2 + 5542^2 .

It is a super-2 number, since 2×64168420² = 8235172250592800, which contains 22 as substring.

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, 1604191 + ... + 1604230.

It is an arithmetic number, because the mean of its divisors is an integer number (11229477).

Almost surely, 2^64168420 is an apocalyptic number.

It is an amenable number.

64168420 is an abundant number, since it is smaller than the sum of its proper divisors (70585304).

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

64168420 is a wasteful number, since it uses less digits than its factorization.

64168420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208430 (or 3208428 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 64168420 is about 8010.5193339758. The cubic root of 64168420 is about 400.3505676660.

The spelling of 64168420 in words is "sixty-four million, one hundred sixty-eight thousand, four hundred twenty".