266986426 has 8 divisors (see below), whose sum is σ = 457691040. Its totient is φ = 114422748.

The previous prime is 266986409. The next prime is 266986427. The reversal of 266986426 is 624689662.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 266986426.

It is not an unprimeable number, because it can be changed into a prime (266986427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9535216 + ... + 9535243.

It is an arithmetic number, because the mean of its divisors is an integer number (57211380).

Almost surely, 2^266986426 is an apocalyptic number.

266986426 is a deficient number, since it is larger than the sum of its proper divisors (190704614).

266986426 is a wasteful number, since it uses less digits than its factorization.

266986426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19070468.

The product of its digits is 1492992, while the sum is 49.

The square root of 266986426 is about 16339.7192754343. The cubic root of 266986426 is about 643.9167571765.

It can be divided in two parts, 26698 and 6426, that added together give a square (33124 = 182²).

The spelling of 266986426 in words is "two hundred sixty-six million, nine hundred eighty-six thousand, four hundred twenty-six".