266363493 has 8 divisors (see below), whose sum is σ = 387437856. Its totient is φ = 161432400.

The previous prime is 266363473. The next prime is 266363509. The reversal of 266363493 is 394363662.

It is a happy number.

266363493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266363493 - 2¹⁰ = 266362469 is a prime.

It is a super-2 number, since 2×266363493² = 141899020806322098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266363423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4035778 + ... + 4035843.

It is an arithmetic number, because the mean of its divisors is an integer number (48429732).

Almost surely, 2^266363493 is an apocalyptic number.

It is an amenable number.

266363493 is a deficient number, since it is larger than the sum of its proper divisors (121074363).

266363493 is a wasteful number, since it uses less digits than its factorization.

266363493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071635.

The product of its digits is 419904, while the sum is 42.

The square root of 266363493 is about 16320.6462188236. The cubic root of 266363493 is about 643.4155714414.

The spelling of 266363493 in words is "two hundred sixty-six million, three hundred sixty-three thousand, four hundred ninety-three".