266302806 has 64 divisors (see below), whose sum is σ = 670035456. Its totient is φ = 68544000.

The previous prime is 266302711. The next prime is 266302837. The reversal of 266302806 is 608203662.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 49656 + ... + 54756.

It is an arithmetic number, because the mean of its divisors is an integer number (10469304).

Almost surely, 2^266302806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266302806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335017728).

266302806 is an abundant number, since it is smaller than the sum of its proper divisors (403732650).

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

266302806 is a wasteful number, since it uses less digits than its factorization.

266302806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5237.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 266302806 is about 16318.7869034435. The cubic root of 266302806 is about 643.3667034751.

The spelling of 266302806 in words is "two hundred sixty-six million, three hundred two thousand, eight hundred six".