216002387 has 2 divisors, whose sum is σ = 216002388. Its totient is φ = 216002386.

The previous prime is 216002383. The next prime is 216002399. The reversal of 216002387 is 783200612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216002387 - 2² = 216002383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216002383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108001193 + 108001194.

It is an arithmetic number, because the mean of its divisors is an integer number (108001194).

Almost surely, 2^216002387 is an apocalyptic number.

216002387 is a deficient number, since it is larger than the sum of its proper divisors (1).

216002387 is an equidigital number, since it uses as much as digits as its factorization.

216002387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 216002387 is about 14697.0196638638. The cubic root of 216002387 is about 600.0022101770.

Adding to 216002387 its reverse (783200612), we get a palindrome (999202999).

The spelling of 216002387 in words is "two hundred sixteen million, two thousand, three hundred eighty-seven".