426666545 has 4 divisors (see below), whose sum is σ = 511999860. Its totient is φ = 341333232.

The previous prime is 426666437. The next prime is 426666553. The reversal of 426666545 is 545666624.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45792289 + 380874256 = 6767^2 + 19516^2 .

It is a cyclic number.

It is not a de Polignac number, because 426666545 - 2¹² = 426662449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 426666496 and 426666505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42666650 + ... + 42666659.

It is an arithmetic number, because the mean of its divisors is an integer number (127999965).

Almost surely, 2^426666545 is an apocalyptic number.

It is an amenable number.

426666545 is a deficient number, since it is larger than the sum of its proper divisors (85333315).

426666545 is an equidigital number, since it uses as much as digits as its factorization.

426666545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85333314.

The product of its digits is 1036800, while the sum is 44.

The square root of 426666545 is about 20655.9082346916. The cubic root of 426666545 is about 752.8287515469.

The spelling of 426666545 in words is "four hundred twenty-six million, six hundred sixty-six thousand, five hundred forty-five".