264701261 has 4 divisors (see below), whose sum is σ = 288765024. Its totient is φ = 240637500.

The previous prime is 264701221. The next prime is 264701309. The reversal of 264701261 is 162107462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 264701261 - 2⁶ = 264701197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264701221) 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, 12031865 + ... + 12031886.

It is an arithmetic number, because the mean of its divisors is an integer number (72191256).

Almost surely, 2^264701261 is an apocalyptic number.

It is an amenable number.

264701261 is a deficient number, since it is larger than the sum of its proper divisors (24063763).

264701261 is a wasteful number, since it uses less digits than its factorization.

264701261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24063762.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 264701261 is about 16269.6423132164. The cubic root of 264701261 is about 642.0743735876.

The spelling of 264701261 in words is "two hundred sixty-four million, seven hundred one thousand, two hundred sixty-one".