16994003 has 8 divisors (see below), whose sum is σ = 18396000. Its totient is φ = 15605568.

The previous prime is 16993969. The next prime is 16994009. The reversal of 16994003 is 30049961.

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 16994003 - 2⁶ = 16993939 is a prime.

It is a super-2 number, since 2×16994003² = 577592275928018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16994009) 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, 698 + ... + 5871.

It is an arithmetic number, because the mean of its divisors is an integer number (2299500).

Almost surely, 2^16994003 is an apocalyptic number.

16994003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

16994003 is a deficient number, since it is larger than the sum of its proper divisors (1401997).

16994003 is a wasteful number, since it uses less digits than its factorization.

16994003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6781.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16994003 is about 4122.3783183983. The cubic root of 16994003 is about 257.0979202633.

The spelling of 16994003 in words is "sixteen million, nine hundred ninety-four thousand, three".