3161666 has 8 divisors (see below), whose sum is σ = 4773180. Its totient is φ = 1570608.

The previous prime is 3161651. The next prime is 3161681. The reversal of 3161666 is 6661613.

It is an interprime number because it is at equal distance from previous prime (3161651) and next prime (3161681).

It can be written as a sum of positive squares in 2 ways, for example, as 2989441 + 172225 = 1729^2 + 415^2 .

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

It is a super-2 number, since 2×3161666² = 19992263791112, which contains 22 as substring.

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, 4721 + ... + 5348.

Almost surely, 2^3161666 is an apocalyptic number.

3161666 is a deficient number, since it is larger than the sum of its proper divisors (1611514).

3161666 is a wasteful number, since it uses less digits than its factorization.

3161666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228.

The product of its digits is 3888, while the sum is 29.

The square root of 3161666 is about 1778.1074208270. The cubic root of 3161666 is about 146.7704625686.

The spelling of 3161666 in words is "three million, one hundred sixty-one thousand, six hundred sixty-six".