64426004 has 24 divisors (see below), whose sum is σ = 116195688. Its totient is φ = 31242240.

The previous prime is 64425989. The next prime is 64426007. The reversal of 64426004 is 40062446.

It can be written as a sum of positive squares in 4 ways, for example, as 3429904 + 60996100 = 1852^2 + 7810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64426007) 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, 16004 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (4841487).

Almost surely, 2^64426004 is an apocalyptic number.

It is an amenable number.

64426004 is a deficient number, since it is larger than the sum of its proper divisors (51769684).

64426004 is a wasteful number, since it uses less digits than its factorization.

64426004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755 (or 3753 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 64426004 is about 8026.5810903522. The cubic root of 64426004 is about 400.8855464055.

The spelling of 64426004 in words is "sixty-four million, four hundred twenty-six thousand, four".