266066530 has 64 divisors (see below), whose sum is σ = 516907008. Its totient is φ = 98366400.

The previous prime is 266066509. The next prime is 266066579. The reversal of 266066530 is 35660662.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1632229 + ... + 1632391.

It is an arithmetic number, because the mean of its divisors is an integer number (8076672).

Almost surely, 2^266066530 is an apocalyptic number.

266066530 is a deficient number, since it is larger than the sum of its proper divisors (250840478).

266066530 is a wasteful number, since it uses less digits than its factorization.

266066530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 266066530 is about 16311.5459107958. The cubic root of 266066530 is about 643.1763724092.

The spelling of 266066530 in words is "two hundred sixty-six million, sixty-six thousand, five hundred thirty".