16387063 has 32 divisors (see below), whose sum is σ = 22487040. Its totient is φ = 11547360.

The previous prime is 16387039. The next prime is 16387081. The reversal of 16387063 is 36078361.

It is a Cunningham number, because it is equal to 254³-1.

It is not a de Polignac number, because 16387063 - 2⁹ = 16386551 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 (16387093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33406 + ... + 33892.

It is an arithmetic number, because the mean of its divisors is an integer number (702720).

Almost surely, 2^16387063 is an apocalyptic number.

16387063 is a deficient number, since it is larger than the sum of its proper divisors (6099977).

16387063 is a wasteful number, since it uses less digits than its factorization.

16387063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 16387063 is about 4048.0937489144. The cubic root of 16387063 is about 253.9999948333. Note that the first 5 decimals are identical.

The spelling of 16387063 in words is "sixteen million, three hundred eighty-seven thousand, sixty-three".