216342487 has 8 divisors (see below), whose sum is σ = 218167200. Its totient is φ = 214523040.

The previous prime is 216342481. The next prime is 216342491. The reversal of 216342487 is 784243612.

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 216342487 - 2³ = 216342479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216342481) 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, 139438 + ... + 140980.

It is an arithmetic number, because the mean of its divisors is an integer number (27270900).

Almost surely, 2^216342487 is an apocalyptic number.

216342487 is a deficient number, since it is larger than the sum of its proper divisors (1824713).

216342487 is a wasteful number, since it uses less digits than its factorization.

216342487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633.

The product of its digits is 64512, while the sum is 37.

The square root of 216342487 is about 14708.5854860350. The cubic root of 216342487 is about 600.3169501341.

The spelling of 216342487 in words is "two hundred sixteen million, three hundred forty-two thousand, four hundred eighty-seven".