16006749 has 8 divisors (see below), whose sum is σ = 23282592. Its totient is φ = 9701040.

The previous prime is 16006729. The next prime is 16006787. The reversal of 16006749 is 94760061.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16006749 - 2¹³ = 15998557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 485053 = 16006749 / (1 + 6 + 0 + 0 + 6 + 7 + 4 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16006709) 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, 242494 + ... + 242559.

It is an arithmetic number, because the mean of its divisors is an integer number (2910324).

Almost surely, 2^16006749 is an apocalyptic number.

It is an amenable number.

16006749 is a deficient number, since it is larger than the sum of its proper divisors (7275843).

16006749 is a wasteful number, since it uses less digits than its factorization.

16006749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485067.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 16006749 is about 4000.8435360559. The cubic root of 16006749 is about 252.0196350284.

The spelling of 16006749 in words is "sixteen million, six thousand, seven hundred forty-nine".