16677385 has 8 divisors (see below), whose sum is σ = 20055240. Its totient is φ = 13313664.

The previous prime is 16677379. The next prime is 16677389. The reversal of 16677385 is 58377661.

It can be written as a sum of positive squares in 4 ways, for example, as 2637376 + 14040009 = 1624^2 + 3747^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16677385 - 2³ = 16677377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16677389) 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, 732 + ... + 5821.

It is an arithmetic number, because the mean of its divisors is an integer number (2506905).

Almost surely, 2^16677385 is an apocalyptic number.

It is an amenable number.

16677385 is a deficient number, since it is larger than the sum of its proper divisors (3377855).

16677385 is an equidigital number, since it uses as much as digits as its factorization.

16677385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7067.

The product of its digits is 211680, while the sum is 43.

The square root of 16677385 is about 4083.7954160315. The cubic root of 16677385 is about 255.4912227968.

The spelling of 16677385 in words is "sixteen million, six hundred seventy-seven thousand, three hundred eighty-five".