16749307 has 4 divisors (see below), whose sum is σ = 16824640. Its totient is φ = 16673976.

The previous prime is 16749287. The next prime is 16749311. The reversal of 16749307 is 70394761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70394761 = 683 ⋅103067.

It is a cyclic number.

It is not a de Polignac number, because 16749307 - 2⁷ = 16749179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16749347) 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, 37332 + ... + 37777.

It is an arithmetic number, because the mean of its divisors is an integer number (4206160).

Almost surely, 2^16749307 is an apocalyptic number.

16749307 is a deficient number, since it is larger than the sum of its proper divisors (75333).

16749307 is an equidigital number, since it uses as much as digits as its factorization.

16749307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75332.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 16749307 is about 4092.5917216356. The cubic root of 16749307 is about 255.8579686996.

The spelling of 16749307 in words is "sixteen million, seven hundred forty-nine thousand, three hundred seven".