16677899 has 4 divisors (see below), whose sum is σ = 19060464. Its totient is φ = 14295336.

The previous prime is 16677887. The next prime is 16677919. The reversal of 16677899 is 99877661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16677899 - 2⁸ = 16677643 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 16677899.

It is not an unprimeable number, because it can be changed into a prime (16677299) 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, 1191272 + ... + 1191285.

It is an arithmetic number, because the mean of its divisors is an integer number (4765116).

Almost surely, 2^16677899 is an apocalyptic number.

16677899 is a deficient number, since it is larger than the sum of its proper divisors (2382565).

16677899 is an equidigital number, since it uses as much as digits as its factorization.

16677899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382564.

The product of its digits is 1143072, while the sum is 53.

The square root of 16677899 is about 4083.8583472006. The cubic root of 16677899 is about 255.4938475317.

It can be divided in two parts, 16677 and 899, that added together give a cube (17576 = 26³).

The spelling of 16677899 in words is "sixteen million, six hundred seventy-seven thousand, eight hundred ninety-nine".