16998545 has 8 divisors (see below), whose sum is σ = 20872896. Its totient is φ = 13282416.

The previous prime is 16998517. The next prime is 16998551. The reversal of 16998545 is 54589961.

It is a happy number.

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 16998545 - 2⁶ = 16998481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16998545.

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, 39317 + ... + 39746.

It is an arithmetic number, because the mean of its divisors is an integer number (2609112).

Almost surely, 2^16998545 is an apocalyptic number.

It is an amenable number.

16998545 is a deficient number, since it is larger than the sum of its proper divisors (3874351).

16998545 is an equidigital number, since it uses as much as digits as its factorization.

16998545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79111.

The product of its digits is 388800, while the sum is 47.

The square root of 16998545 is about 4122.9291771749. The cubic root of 16998545 is about 257.1208231414.

The spelling of 16998545 in words is "sixteen million, nine hundred ninety-eight thousand, five hundred forty-five".