426561365 has 8 divisors (see below), whose sum is σ = 541983960. Its totient is φ = 321175552.

The previous prime is 426561323. The next prime is 426561367. The reversal of 426561365 is 563165624.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 66814276 + 359747089 = 8174^2 + 18967^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 426561365 - 2¹⁸ = 426299221 is a prime.

It is a super-2 number, since 2×426561365² = 363909196221326450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426561367) 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, 2509100 + ... + 2509269.

It is an arithmetic number, because the mean of its divisors is an integer number (67747995).

Almost surely, 2^426561365 is an apocalyptic number.

It is an amenable number.

426561365 is a deficient number, since it is larger than the sum of its proper divisors (115422595).

426561365 is a wasteful number, since it uses less digits than its factorization.

426561365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5018391.

The product of its digits is 129600, while the sum is 38.

The square root of 426561365 is about 20653.3620749746. The cubic root of 426561365 is about 752.7668850952.

The spelling of 426561365 in words is "four hundred twenty-six million, five hundred sixty-one thousand, three hundred sixty-five".