264874861 has 2 divisors, whose sum is σ = 264874862. Its totient is φ = 264874860.

The previous prime is 264874853. The next prime is 264874873. The reversal of 264874861 is 168478462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240560100 + 24314761 = 15510^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 264874861 - 2³ = 264874853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264874891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132437430 + 132437431.

It is an arithmetic number, because the mean of its divisors is an integer number (132437431).

Almost surely, 2^264874861 is an apocalyptic number.

It is an amenable number.

264874861 is a deficient number, since it is larger than the sum of its proper divisors (1).

264874861 is an equidigital number, since it uses as much as digits as its factorization.

264874861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 46.

The square root of 264874861 is about 16274.9765284009. The cubic root of 264874861 is about 642.2147075782.

The spelling of 264874861 in words is "two hundred sixty-four million, eight hundred seventy-four thousand, eight hundred sixty-one".