426561165 has 12 divisors (see below), whose sum is σ = 739372764. Its totient is φ = 227499264.

The previous prime is 426561137. The next prime is 426561167. The reversal of 426561165 is 561165624.

It can be written as a sum of positive squares in 2 ways, for example, as 166642281 + 259918884 = 12909^2 + 16122^2 .

It is not a de Polignac number, because 426561165 - 2⁹ = 426560653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426561167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4739524 + ... + 4739613.

It is an arithmetic number, because the mean of its divisors is an integer number (61614397).

Almost surely, 2^426561165 is an apocalyptic number.

426561165 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

426561165 is a deficient number, since it is larger than the sum of its proper divisors (312811599).

426561165 is a wasteful number, since it uses less digits than its factorization.

426561165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9479148 (or 9479145 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 426561165 is about 20653.3572331474. The cubic root of 426561165 is about 752.7667674463.

The spelling of 426561165 in words is "four hundred twenty-six million, five hundred sixty-one thousand, one hundred sixty-five".