16749905 has 8 divisors (see below), whose sum is σ = 20155200. Its totient is φ = 13363056.

The previous prime is 16749899. The next prime is 16749949. The reversal of 16749905 is 50994761.

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

It is a cyclic number.

It is not a de Polignac number, because 16749905 - 2¹⁸ = 16487761 is a prime.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2525 + ... + 6314.

It is an arithmetic number, because the mean of its divisors is an integer number (2519400).

Almost surely, 2^16749905 is an apocalyptic number.

It is an amenable number.

16749905 is a deficient number, since it is larger than the sum of its proper divisors (3405295).

16749905 is an equidigital number, since it uses as much as digits as its factorization.

16749905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 16749905 is about 4092.6647798226. The cubic root of 16749905 is about 255.8610136264.

The spelling of 16749905 in words is "sixteen million, seven hundred forty-nine thousand, nine hundred five".