426490565 has 8 divisors (see below), whose sum is σ = 511905528. Its totient is φ = 341114560.

The previous prime is 426490553. The next prime is 426490567. The reversal of 426490565 is 565094624.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29604481 + 396886084 = 5441^2 + 19922^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 426490565 - 2¹⁰ = 426489541 is a prime.

It is a super-3 number, since 3×426490565³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426490567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26855 + ... + 39675.

It is an arithmetic number, because the mean of its divisors is an integer number (63988191).

Almost surely, 2^426490565 is an apocalyptic number.

It is an amenable number.

426490565 is a deficient number, since it is larger than the sum of its proper divisors (85414963).

426490565 is a wasteful number, since it uses less digits than its factorization.

426490565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19479.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 426490565 is about 20651.6479971938. The cubic root of 426490565 is about 752.7252350938.

The spelling of 426490565 in words is "four hundred twenty-six million, four hundred ninety thousand, five hundred sixty-five".