16612387 has 4 divisors (see below), whose sum is σ = 18122616. Its totient is φ = 15102160.

The previous prime is 16612381. The next prime is 16612397. The reversal of 16612387 is 78321661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16612387 - 2¹⁹ = 16088099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16612381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755098 + ... + 755119.

It is an arithmetic number, because the mean of its divisors is an integer number (4530654).

Almost surely, 2^16612387 is an apocalyptic number.

16612387 is a deficient number, since it is larger than the sum of its proper divisors (1510229).

16612387 is a wasteful number, since it uses less digits than its factorization.

16612387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510228.

The product of its digits is 12096, while the sum is 34.

The square root of 16612387 is about 4075.8296088036. The cubic root of 16612387 is about 255.1588757465.

The spelling of 16612387 in words is "sixteen million, six hundred twelve thousand, three hundred eighty-seven".