264722287 has 2 divisors, whose sum is σ = 264722288. Its totient is φ = 264722286.

The previous prime is 264722279. The next prime is 264722327. The reversal of 264722287 is 782227462.

It is a happy number.

It is an a-pointer prime, because the next prime (264722327) can be obtained adding 264722287 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264722287 - 2³ = 264722279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264722587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132361143 + 132361144.

It is an arithmetic number, because the mean of its divisors is an integer number (132361144).

Almost surely, 2^264722287 is an apocalyptic number.

264722287 is a deficient number, since it is larger than the sum of its proper divisors (1).

264722287 is an equidigital number, since it uses as much as digits as its factorization.

264722287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 40.

The square root of 264722287 is about 16270.2884731648. The cubic root of 264722287 is about 642.0913737564.

The spelling of 264722287 in words is "two hundred sixty-four million, seven hundred twenty-two thousand, two hundred eighty-seven".