64247287 has 8 divisors (see below), whose sum is σ = 70877520. Its totient is φ = 57858240.

The previous prime is 64247273. The next prime is 64247291. The reversal of 64247287 is 78274246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64247287 - 2¹¹ = 64245239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64247297) 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 in 7 ways as a sum of consecutive naturals, for example, 59737 + ... + 60802.

It is an arithmetic number, because the mean of its divisors is an integer number (8859690).

Almost surely, 2^64247287 is an apocalyptic number.

64247287 is a deficient number, since it is larger than the sum of its proper divisors (6630233).

64247287 is a wasteful number, since it uses less digits than its factorization.

64247287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120593.

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

The square root of 64247287 is about 8015.4405368638. The cubic root of 64247287 is about 400.5145191414.

The spelling of 64247287 in words is "sixty-four million, two hundred forty-seven thousand, two hundred eighty-seven".