16773993 has 8 divisors (see below), whose sum is σ = 24850400. Its totient is φ = 11182644.

The previous prime is 16773947. The next prime is 16773997. The reversal of 16773993 is 39937761.

It is not a de Polignac number, because 16773993 - 2⁹ = 16773481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16773997) 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, 310603 + ... + 310656.

It is an arithmetic number, because the mean of its divisors is an integer number (3106300).

Almost surely, 2^16773993 is an apocalyptic number.

It is an amenable number.

16773993 is a deficient number, since it is larger than the sum of its proper divisors (8076407).

16773993 is an equidigital number, since it uses as much as digits as its factorization.

16773993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621268 (or 621262 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 16773993 is about 4095.6065484858. The cubic root of 16773993 is about 255.9836059244.

It can be divided in two parts, 16773 and 993, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 16773993 in words is "sixteen million, seven hundred seventy-three thousand, nine hundred ninety-three".