65263987 has 2 divisors, whose sum is σ = 65263988. Its totient is φ = 65263986.

The previous prime is 65263951. The next prime is 65264011. The reversal of 65263987 is 78936256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65263987 - 2¹⁵ = 65231219 is a prime.

It is not a weakly prime, because it can be changed into another prime (65266987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32631993 + 32631994.

It is an arithmetic number, because the mean of its divisors is an integer number (32631994).

Almost surely, 2^65263987 is an apocalyptic number.

65263987 is a deficient number, since it is larger than the sum of its proper divisors (1).

65263987 is an equidigital number, since it uses as much as digits as its factorization.

65263987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 65263987 is about 8078.6129378749. The cubic root of 65263987 is about 402.6161582366.

The spelling of 65263987 in words is "sixty-five million, two hundred sixty-three thousand, nine hundred eighty-seven".