266479968 has 96 divisors (see below), whose sum is σ = 728082432. Its totient is φ = 85248000.

The previous prime is 266479867. The next prime is 266480009. The reversal of 266479968 is 869974662.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449080 + ... + 449672.

It is an arithmetic number, because the mean of its divisors is an integer number (7584192).

Almost surely, 2^266479968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266479968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364041216).

266479968 is an abundant number, since it is smaller than the sum of its proper divisors (461602464).

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

266479968 is a wasteful number, since it uses less digits than its factorization.

266479968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 780 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The square root of 266479968 is about 16324.2141617905. The cubic root of 266479968 is about 643.5093416838.

The spelling of 266479968 in words is "two hundred sixty-six million, four hundred seventy-nine thousand, nine hundred sixty-eight".