426165563 has 4 divisors (see below), whose sum is σ = 426394968. Its totient is φ = 425936160.

The previous prime is 426165541. The next prime is 426165577. The reversal of 426165563 is 365561624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 426165563 - 2¹⁴ = 426149179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426165533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111893 + ... + 115638.

It is an arithmetic number, because the mean of its divisors is an integer number (106598742).

Almost surely, 2^426165563 is an apocalyptic number.

426165563 is a deficient number, since it is larger than the sum of its proper divisors (229405).

426165563 is a wasteful number, since it uses less digits than its factorization.

426165563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229404.

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

The square root of 426165563 is about 20643.7778277136. Note that the first 3 decimals coincide. The cubic root of 426165563 is about 752.5339847714.

The spelling of 426165563 in words is "four hundred twenty-six million, one hundred sixty-five thousand, five hundred sixty-three".