866026426 has 16 divisors (see below), whose sum is σ = 1335916800. Its totient is φ = 420886048.

The previous prime is 866026423. The next prime is 866026433. The reversal of 866026426 is 624620668.

It is not an unprimeable number, because it can be changed into a prime (866026423) 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 7 ways as a sum of consecutive naturals, for example, 30730 + ... + 51733.

It is an arithmetic number, because the mean of its divisors is an integer number (83494800).

Almost surely, 2^866026426 is an apocalyptic number.

866026426 is a deficient number, since it is larger than the sum of its proper divisors (469890374).

866026426 is a wasteful number, since it uses less digits than its factorization.

866026426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82613.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 866026426 is about 29428.3269317167. The cubic root of 866026426 is about 953.1846680281.

The spelling of 866026426 in words is "eight hundred sixty-six million, twenty-six thousand, four hundred twenty-six".