16677906 has 16 divisors (see below), whose sum is σ = 38121024. Its totient is φ = 4765104.

The previous prime is 16677887. The next prime is 16677919. The reversal of 16677906 is 60977661.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 397093 = 16677906 / (1 + 6 + 6 + 7 + 7 + 9 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198505 + ... + 198588.

It is an arithmetic number, because the mean of its divisors is an integer number (2382564).

Almost surely, 2^16677906 is an apocalyptic number.

16677906 is an abundant number, since it is smaller than the sum of its proper divisors (21443118).

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

16677906 is a wasteful number, since it uses less digits than its factorization.

16677906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397105.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 16677906 is about 4083.8592042332. The cubic root of 16677906 is about 255.4938832767.

The spelling of 16677906 in words is "sixteen million, six hundred seventy-seven thousand, nine hundred six".