426775631 has 4 divisors (see below), whose sum is σ = 427614600. Its totient is φ = 425936664.

The previous prime is 426775627. The next prime is 426775637. The reversal of 426775631 is 136577624.

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 426775631 - 2² = 426775627 is a prime.

It is a super-2 number, since 2×426775631² = 364274878430896322, which contains 22 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 (426775637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418721 + ... + 419738.

It is an arithmetic number, because the mean of its divisors is an integer number (106903650).

Almost surely, 2^426775631 is an apocalyptic number.

426775631 is a deficient number, since it is larger than the sum of its proper divisors (838969).

426775631 is an equidigital number, since it uses as much as digits as its factorization.

426775631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838968.

The product of its digits is 211680, while the sum is 41.

The square root of 426775631 is about 20658.5486179451. The cubic root of 426775631 is about 752.8929047522.

The spelling of 426775631 in words is "four hundred twenty-six million, seven hundred seventy-five thousand, six hundred thirty-one".