16061643 has 12 divisors (see below), whose sum is σ = 24984960. Its totient is φ = 9884016.

The previous prime is 16061623. The next prime is 16061657. The reversal of 16061643 is 34616061.

16061643 is a `hidden beast` number, since 1 + 6 + 0 + 616 + 43 = 666.

It is not a de Polignac number, because 16061643 - 2¹³ = 16053451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16061603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68523 + ... + 68756.

It is an arithmetic number, because the mean of its divisors is an integer number (2082080).

Almost surely, 2^16061643 is an apocalyptic number.

16061643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16061643 is a deficient number, since it is larger than the sum of its proper divisors (8923317).

16061643 is a wasteful number, since it uses less digits than its factorization.

16061643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137298 (or 137295 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 16061643 is about 4007.6979676617. The cubic root of 16061643 is about 252.3074007546.

It can be divided in two parts, 1606 and 1643, that added together give a square (3249 = 57²).

The spelling of 16061643 in words is "sixteen million, sixty-one thousand, six hundred forty-three".