868217487 has 8 divisors (see below), whose sum is σ = 1165393200. Its totient is φ = 574926720.

The previous prime is 868217473. The next prime is 868217507. The reversal of 868217487 is 784712868.

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

It is not a de Polignac number, because 868217487 - 2¹² = 868213391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868213487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970714 + ... + 971607.

It is an arithmetic number, because the mean of its divisors is an integer number (145674150).

Almost surely, 2^868217487 is an apocalyptic number.

868217487 is a deficient number, since it is larger than the sum of its proper divisors (297175713).

868217487 is a wasteful number, since it uses less digits than its factorization.

868217487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942473.

The product of its digits is 1204224, while the sum is 51.

The square root of 868217487 is about 29465.5304890307. The cubic root of 868217487 is about 953.9878486469.

The spelling of 868217487 in words is "eight hundred sixty-eight million, two hundred seventeen thousand, four hundred eighty-seven".