266163552 has 144 divisors (see below), whose sum is σ = 805109760. Its totient is φ = 83172096.

The previous prime is 266163539. The next prime is 266163553. The reversal of 266163552 is 255361662.

It is a happy number.

266163552 is a `hidden beast` number, since 2 + 6 + 616 + 35 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266163553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 694753 + ... + 695135.

It is an arithmetic number, because the mean of its divisors is an integer number (5591040).

Almost surely, 2^266163552 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 266163552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402554880).

266163552 is an abundant number, since it is smaller than the sum of its proper divisors (538946208).

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

266163552 is a wasteful number, since it uses less digits than its factorization.

266163552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 534 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 266163552 is about 16314.5196680748. The cubic root of 266163552 is about 643.2545416732.

The spelling of 266163552 in words is "two hundred sixty-six million, one hundred sixty-three thousand, five hundred fifty-two".