264861270 has 48 divisors (see below), whose sum is σ = 692660592. Its totient is φ = 70217280.

The previous prime is 264861269. The next prime is 264861277. The reversal of 264861270 is 72168462.

264861270 is a `hidden beast` number, since 2 + 648 + 6 + 1 + 2 + 7 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264861277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7065 + ... + 24075.

It is an arithmetic number, because the mean of its divisors is an integer number (14430429).

Almost surely, 2^264861270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264861270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346330296).

264861270 is an abundant number, since it is smaller than the sum of its proper divisors (427799322).

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

264861270 is a wasteful number, since it uses less digits than its factorization.

264861270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17197 (or 17194 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 264861270 is about 16274.5589801997. The cubic root of 264861270 is about 642.2037231592.

The spelling of 264861270 in words is "two hundred sixty-four million, eight hundred sixty-one thousand, two hundred seventy".