426016661 has 4 divisors (see below), whose sum is σ = 486876192. Its totient is φ = 365157132.

The previous prime is 426016589. The next prime is 426016681. The reversal of 426016661 is 166610624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426016661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426016681) 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 3 ways as a sum of consecutive naturals, for example, 30429755 + ... + 30429768.

It is an arithmetic number, because the mean of its divisors is an integer number (121719048).

Almost surely, 2^426016661 is an apocalyptic number.

It is an amenable number.

426016661 is a deficient number, since it is larger than the sum of its proper divisors (60859531).

426016661 is an equidigital number, since it uses as much as digits as its factorization.

426016661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60859530.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 426016661 is about 20640.1710506478. The cubic root of 426016661 is about 752.4463295828.

The spelling of 426016661 in words is "four hundred twenty-six million, sixteen thousand, six hundred sixty-one".