266626416 has 80 divisors (see below), whose sum is σ = 789235200. Its totient is φ = 75980544.

The previous prime is 266626397. The next prime is 266626427. The reversal of 266626416 is 614626662.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170245 + ... + 171803.

It is an arithmetic number, because the mean of its divisors is an integer number (9865440).

Almost surely, 2^266626416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266626416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394617600).

266626416 is an abundant number, since it is smaller than the sum of its proper divisors (522608784).

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

266626416 is a wasteful number, since it uses less digits than its factorization.

266626416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086 (or 2080 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 266626416 is about 16328.6991521064. The cubic root of 266626416 is about 643.6272034481.

The spelling of 266626416 in words is "two hundred sixty-six million, six hundred twenty-six thousand, four hundred sixteen".