426664544 has 12 divisors (see below), whose sum is σ = 839995884. Its totient is φ = 213332256.

The previous prime is 426664541. The next prime is 426664547. The reversal of 426664544 is 445466624.

It is an interprime number because it is at equal distance from previous prime (426664541) and next prime (426664547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426664541) 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 as a sum of consecutive naturals, namely, 6666602 + ... + 6666665.

It is an arithmetic number, because the mean of its divisors is an integer number (69999657).

Almost surely, 2^426664544 is an apocalyptic number.

It is an amenable number.

426664544 is a deficient number, since it is larger than the sum of its proper divisors (413331340).

426664544 is a wasteful number, since it uses less digits than its factorization.

426664544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13333277 (or 13333269 counting only the distinct ones).

The product of its digits is 552960, while the sum is 41.

The square root of 426664544 is about 20655.8597981299. The cubic root of 426664544 is about 752.8275746616.

The spelling of 426664544 in words is "four hundred twenty-six million, six hundred sixty-four thousand, five hundred forty-four".