16671716 has 12 divisors (see below), whose sum is σ = 29324988. Its totient is φ = 8293152.

The previous prime is 16671701. The next prime is 16671731. The reversal of 16671716 is 61717661.

It is an interprime number because it is at equal distance from previous prime (16671701) and next prime (16671731).

It can be written as a sum of positive squares in 2 ways, for example, as 8526400 + 8145316 = 2920^2 + 2854^2 .

It is a super-2 number, since 2×16671716² = 555892228769312, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9791 + ... + 11366.

It is an arithmetic number, because the mean of its divisors is an integer number (2443749).

Almost surely, 2^16671716 is an apocalyptic number.

It is an amenable number.

16671716 is a deficient number, since it is larger than the sum of its proper divisors (12653272).

16671716 is a wasteful number, since it uses less digits than its factorization.

16671716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21358 (or 21356 counting only the distinct ones).

The product of its digits is 10584, while the sum is 35.

The square root of 16671716 is about 4083.1012723174. The cubic root of 16671716 is about 255.4622705383.

The spelling of 16671716 in words is "sixteen million, six hundred seventy-one thousand, seven hundred sixteen".