64243087 has 2 divisors, whose sum is σ = 64243088. Its totient is φ = 64243086.

The previous prime is 64243073. The next prime is 64243093. The reversal of 64243087 is 78034246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64243087 - 2¹¹ = 64241039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64243987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32121543 + 32121544.

It is an arithmetic number, because the mean of its divisors is an integer number (32121544).

Almost surely, 2^64243087 is an apocalyptic number.

64243087 is a deficient number, since it is larger than the sum of its proper divisors (1).

64243087 is an equidigital number, since it uses as much as digits as its factorization.

64243087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 64243087 is about 8015.1785382485. The cubic root of 64243087 is about 400.5057914180.

The spelling of 64243087 in words is "sixty-four million, two hundred forty-three thousand, eighty-seven".