16679790 has 64 divisors (see below), whose sum is σ = 44870400. Its totient is φ = 4408992.

The previous prime is 16679759. The next prime is 16679797. The reversal of 16679790 is 9797661.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16679797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43821 + ... + 44199.

It is an arithmetic number, because the mean of its divisors is an integer number (701100).

Almost surely, 2^16679790 is an apocalyptic number.

16679790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16679790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22435200).

16679790 is an abundant number, since it is smaller than the sum of its proper divisors (28190610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16679790 is a wasteful number, since it uses less digits than its factorization.

16679790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 16679790 is about 4084.0898618909. The cubic root of 16679790 is about 255.5035034363.

The spelling of 16679790 in words is "sixteen million, six hundred seventy-nine thousand, seven hundred ninety".