266731006 has 16 divisors (see below), whose sum is σ = 434741760. Its totient is φ = 122270040.

The previous prime is 266730983. The next prime is 266731013. The reversal of 266731006 is 600137662.

It is a super-2 number, since 2×266731006² = 142290859123544072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112036 + ... + 114391.

It is an arithmetic number, because the mean of its divisors is an integer number (27171360).

Almost surely, 2^266731006 is an apocalyptic number.

266731006 is a deficient number, since it is larger than the sum of its proper divisors (168010754).

266731006 is a wasteful number, since it uses less digits than its factorization.

266731006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226479.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 266731006 is about 16331.9014814565. The cubic root of 266731006 is about 643.7113513605.

Adding to 266731006 its reverse (600137662), we get a palindrome (866868668).

The spelling of 266731006 in words is "two hundred sixty-six million, seven hundred thirty-one thousand, six".