426636543 has 8 divisors (see below), whose sum is σ = 569008768. Its totient is φ = 284344344.

The previous prime is 426636533. The next prime is 426636547. The reversal of 426636543 is 345636624.

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

It is not a de Polignac number, because 426636543 - 2⁴ = 426636527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426636547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6205 + ... + 29862.

It is an arithmetic number, because the mean of its divisors is an integer number (71126096).

Almost surely, 2^426636543 is an apocalyptic number.

426636543 is a deficient number, since it is larger than the sum of its proper divisors (142372225).

426636543 is a wasteful number, since it uses less digits than its factorization.

426636543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40013.

The product of its digits is 311040, while the sum is 39.

The square root of 426636543 is about 20655.1819890312. The cubic root of 426636543 is about 752.8111055281.

The spelling of 426636543 in words is "four hundred twenty-six million, six hundred thirty-six thousand, five hundred forty-three".