264020261 has 8 divisors (see below), whose sum is σ = 271586784. Its totient is φ = 256558320.

The previous prime is 264020233. The next prime is 264020269. The reversal of 264020261 is 162020462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264020261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264020269) 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, 21011 + ... + 31136.

It is an arithmetic number, because the mean of its divisors is an integer number (33948348).

Almost surely, 2^264020261 is an apocalyptic number.

It is an amenable number.

264020261 is a deficient number, since it is larger than the sum of its proper divisors (7566523).

264020261 is an equidigital number, since it uses as much as digits as its factorization.

264020261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52291.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 264020261 is about 16248.7002864845. The cubic root of 264020261 is about 641.5232766534.

The spelling of 264020261 in words is "two hundred sixty-four million, twenty thousand, two hundred sixty-one".