266490630 has 48 divisors (see below), whose sum is σ = 791859744. Its totient is φ = 60912000.

The previous prime is 266490607. The next prime is 266490641. The reversal of 266490630 is 36094662.

266490630 is a `hidden beast` number, since 2 + 6 + 649 + 0 + 6 + 3 + 0 = 666.

266490630 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 23 ways as a sum of consecutive naturals, for example, 210871 + ... + 212130.

It is an arithmetic number, because the mean of its divisors is an integer number (16497078).

Almost surely, 2^266490630 is an apocalyptic number.

266490630 is an abundant number, since it is smaller than the sum of its proper divisors (525369114).

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

266490630 is a wasteful number, since it uses less digits than its factorization.

266490630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423021 (or 423018 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 266490630 is about 16324.5407286086. The cubic root of 266490630 is about 643.5179239487.

The spelling of 266490630 in words is "two hundred sixty-six million, four hundred ninety thousand, six hundred thirty".