264287887 has 2 divisors, whose sum is σ = 264287888. Its totient is φ = 264287886.

The previous prime is 264287867. The next prime is 264287893. The reversal of 264287887 is 788782462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264287887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264287827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132143943 + 132143944.

It is an arithmetic number, because the mean of its divisors is an integer number (132143944).

Almost surely, 2^264287887 is an apocalyptic number.

264287887 is a deficient number, since it is larger than the sum of its proper divisors (1).

264287887 is an equidigital number, since it uses as much as digits as its factorization.

264287887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2408448, while the sum is 52.

The square root of 264287887 is about 16256.9335054308. The cubic root of 264287887 is about 641.7399649856.

The spelling of 264287887 in words is "two hundred sixty-four million, two hundred eighty-seven thousand, eight hundred eighty-seven".