264747761 has 2 divisors, whose sum is σ = 264747762. Its totient is φ = 264747760.

The previous prime is 264747737. The next prime is 264747793. The reversal of 264747761 is 167747462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171741025 + 93006736 = 13105^2 + 9644^2 .

It is a cyclic number.

It is not a de Polignac number, because 264747761 - 2¹⁰ = 264746737 is a prime.

It is not a weakly prime, because it can be changed into another prime (264747731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132373880 + 132373881.

It is an arithmetic number, because the mean of its divisors is an integer number (132373881).

Almost surely, 2^264747761 is an apocalyptic number.

It is an amenable number.

264747761 is a deficient number, since it is larger than the sum of its proper divisors (1).

264747761 is an equidigital number, since it uses as much as digits as its factorization.

264747761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 44.

The square root of 264747761 is about 16271.0712923274. The cubic root of 264747761 is about 642.1119690643. Note that the first 3 decimals are identical.

The spelling of 264747761 in words is "two hundred sixty-four million, seven hundred forty-seven thousand, seven hundred sixty-one".