266808964 has 6 divisors (see below), whose sum is σ = 466915694. Its totient is φ = 133404480.

The previous prime is 266808929. The next prime is 266808977. The reversal of 266808964 is 469808662.

It can be written as a sum of positive squares in only one way, i.e., 223801600 + 43007364 = 14960^2 + 6558^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33351117 + ... + 33351124.

Almost surely, 2^266808964 is an apocalyptic number.

It is an amenable number.

266808964 is a deficient number, since it is larger than the sum of its proper divisors (200106730).

266808964 is a wasteful number, since it uses less digits than its factorization.

266808964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66702245 (or 66702243 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 266808964 is about 16334.2879857066. The cubic root of 266808964 is about 643.7740581828.

The spelling of 266808964 in words is "two hundred sixty-six million, eight hundred eight thousand, nine hundred sixty-four".