64056420 has 60 divisors (see below), whose sum is σ = 200952444. Its totient is φ = 17081280.

The previous prime is 64056407. The next prime is 64056427. The reversal of 64056420 is 2465046.

It is a happy number.

64056420 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 7986276 + 56070144 = 2826^2 + 7488^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (64056427) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 18151 + ... + 21390.

Almost surely, 2^64056420 is an apocalyptic number.

64056420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64056420 is an abundant number, since it is smaller than the sum of its proper divisors (136896024).

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

64056420 is a wasteful number, since it uses less digits than its factorization.

64056420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39562 (or 39551 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 64056420 is about 8003.5254731899. The cubic root of 64056420 is about 400.1175071435.

The spelling of 64056420 in words is "sixty-four million, fifty-six thousand, four hundred twenty".