266890968 has 24 divisors (see below), whose sum is σ = 722829900. Its totient is φ = 88963632.

The previous prime is 266890961. The next prime is 266890979. The reversal of 266890968 is 869098662.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266890961) 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 5 ways as a sum of consecutive naturals, for example, 1853338 + ... + 1853481.

Almost surely, 2^266890968 is an apocalyptic number.

It is an amenable number.

266890968 is an abundant number, since it is smaller than the sum of its proper divisors (455938932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266890968 is a wasteful number, since it uses less digits than its factorization.

266890968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706831 (or 3706824 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 266890968 is about 16336.7979726751. The cubic root of 266890968 is about 643.8400062922.

It can be divided in two parts, 2668 and 90968, that added together give a square (93636 = 306²).

The spelling of 266890968 in words is "two hundred sixty-six million, eight hundred ninety thousand, nine hundred sixty-eight".