16749197 has 16 divisors (see below), whose sum is σ = 18009264. Its totient is φ = 15552000.

The previous prime is 16749191. The next prime is 16749247. The reversal of 16749197 is 79194761.

It can be written as a sum of positive squares in 8 ways, for example, as 6895876 + 9853321 = 2626^2 + 3139^2 .

It is a cyclic number.

It is not a de Polignac number, because 16749197 - 2¹⁶ = 16683661 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 (16749191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92447 + ... + 92627.

It is an arithmetic number, because the mean of its divisors is an integer number (1125579).

Almost surely, 2^16749197 is an apocalyptic number.

It is an amenable number.

16749197 is a deficient number, since it is larger than the sum of its proper divisors (1260067).

16749197 is a wasteful number, since it uses less digits than its factorization.

16749197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its digits is 95256, while the sum is 44.

The square root of 16749197 is about 4092.5782826966. The cubic root of 16749197 is about 255.8574085881.

The spelling of 16749197 in words is "sixteen million, seven hundred forty-nine thousand, one hundred ninety-seven".