16777345 has 8 divisors (see below), whose sum is σ = 21681576. Its totient is φ = 12389376.

The previous prime is 16777337. The next prime is 16777381. The reversal of 16777345 is 54377761.

It can be written as a sum of positive squares in 4 ways, for example, as 3932289 + 12845056 = 1983^2 + 3584^2 .

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 16777345 - 2³ = 16777337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16777298 and 16777307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128992 + ... + 129121.

It is an arithmetic number, because the mean of its divisors is an integer number (2710197).

Almost surely, 2^16777345 is an apocalyptic number.

It is an amenable number.

16777345 is a deficient number, since it is larger than the sum of its proper divisors (4904231).

16777345 is a wasteful number, since it uses less digits than its factorization.

16777345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258131.

The product of its digits is 123480, while the sum is 40.

The square root of 16777345 is about 4096.0157470400. The cubic root of 16777345 is about 256.0006561262. Note that the first 3 decimals are identical.

The spelling of 16777345 in words is "sixteen million, seven hundred seventy-seven thousand, three hundred forty-five".