266610872 has 32 divisors (see below), whose sum is σ = 546966000. Its totient is φ = 120825600.

The previous prime is 266610853. The next prime is 266610887. The reversal of 266610872 is 278016662.

It is a happy number.

266610872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26372 + ... + 35052.

Almost surely, 2^266610872 is an apocalyptic number.

266610872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

266610872 is an abundant number, since it is smaller than the sum of its proper divisors (280355128).

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

266610872 is a wasteful number, since it uses less digits than its factorization.

266610872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9047 (or 9043 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 266610872 is about 16328.2231733891. The cubic root of 266610872 is about 643.6146956406.

The spelling of 266610872 in words is "two hundred sixty-six million, six hundred ten thousand, eight hundred seventy-two".