16993801 has 4 divisors (see below), whose sum is σ = 18538704. Its totient is φ = 15448900.

The previous prime is 16993799. The next prime is 16993817. The reversal of 16993801 is 10839961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10839961 = 11 ⋅985451.

It is a cyclic number.

It is not a de Polignac number, because 16993801 - 2¹ = 16993799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16993831) 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, 772435 + ... + 772456.

It is an arithmetic number, because the mean of its divisors is an integer number (4634676).

Almost surely, 2^16993801 is an apocalyptic number.

16993801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16993801 is a deficient number, since it is larger than the sum of its proper divisors (1544903).

16993801 is a wasteful number, since it uses less digits than its factorization.

16993801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544902.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 16993801 is about 4122.3538179055. The cubic root of 16993801 is about 257.0969015906.

The spelling of 16993801 in words is "sixteen million, nine hundred ninety-three thousand, eight hundred one".