16677890 has 8 divisors (see below), whose sum is σ = 30020220. Its totient is φ = 6671152.

The previous prime is 16677887. The next prime is 16677919. The reversal of 16677890 is 9877661.

It can be written as a sum of positive squares in 2 ways, for example, as 16410601 + 267289 = 4051^2 + 517^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833885 + ... + 833904.

Almost surely, 2^16677890 is an apocalyptic number.

16677890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16677890 is a deficient number, since it is larger than the sum of its proper divisors (13342330).

16677890 is a wasteful number, since it uses less digits than its factorization.

16677890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667796.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 16677890 is about 4083.8572453013. The cubic root of 16677890 is about 255.4938015737.

The spelling of 16677890 in words is "sixteen million, six hundred seventy-seven thousand, eight hundred ninety".