264496861 has 2 divisors, whose sum is σ = 264496862. Its totient is φ = 264496860.

The previous prime is 264496811. The next prime is 264496873. The reversal of 264496861 is 168694462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238548025 + 25948836 = 15445^2 + 5094^2 .

It is a cyclic number.

It is not a de Polignac number, because 264496861 - 2¹⁹ = 263972573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264496811) 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, 132248430 + 132248431.

It is an arithmetic number, because the mean of its divisors is an integer number (132248431).

Almost surely, 2^264496861 is an apocalyptic number.

It is an amenable number.

264496861 is a deficient number, since it is larger than the sum of its proper divisors (1).

264496861 is an equidigital number, since it uses as much as digits as its factorization.

264496861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 264496861 is about 16263.3594623005. The cubic root of 264496861 is about 641.9090629568.

The spelling of 264496861 in words is "two hundred sixty-four million, four hundred ninety-six thousand, eight hundred sixty-one".