266213875 has 32 divisors (see below), whose sum is σ = 343160064. Its totient is φ = 206080000.

The previous prime is 266213873. The next prime is 266213911. The reversal of 266213875 is 578312662.

It is not a de Polignac number, because 266213875 - 2¹ = 266213873 is a prime.

It is a Duffinian number.

Its product of digits (120960) is a multiple of the sum of its prime factors (576).

It is not an unprimeable number, because it can be changed into a prime (266213873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663675 + ... + 664075.

It is an arithmetic number, because the mean of its divisors is an integer number (10723752).

Almost surely, 2^266213875 is an apocalyptic number.

266213875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

266213875 is a deficient number, since it is larger than the sum of its proper divisors (76946189).

266213875 is a wasteful number, since it uses less digits than its factorization.

266213875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 566 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 266213875 is about 16316.0618716650. The cubic root of 266213875 is about 643.2950787267.

The spelling of 266213875 in words is "two hundred sixty-six million, two hundred thirteen thousand, eight hundred seventy-five".