266251064 has 16 divisors (see below), whose sum is σ = 515325120. Its totient is φ = 128831040.

The previous prime is 266251057. The next prime is 266251067. The reversal of 266251064 is 460152662.

It is a super-2 number, since 2×266251064² = 141779258162264192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266251064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266251067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536549 + ... + 537044.

It is an arithmetic number, because the mean of its divisors is an integer number (32207820).

Almost surely, 2^266251064 is an apocalyptic number.

It is an amenable number.

266251064 is a deficient number, since it is larger than the sum of its proper divisors (249074056).

266251064 is a wasteful number, since it uses less digits than its factorization.

266251064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073630 (or 1073626 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 266251064 is about 16317.2014757433. The cubic root of 266251064 is about 643.3250325709.

The spelling of 266251064 in words is "two hundred sixty-six million, two hundred fifty-one thousand, sixty-four".