3161986 has 8 divisors (see below), whose sum is σ = 4906620. Its totient is φ = 1526448.

The previous prime is 3161953. The next prime is 3161993. The reversal of 3161986 is 6891613.

It can be written as a sum of positive squares in 2 ways, for example, as 2954961 + 207025 = 1719^2 + 455^2 .

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

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, 27201 + ... + 27316.

Almost surely, 2^3161986 is an apocalyptic number.

3161986 is a deficient number, since it is larger than the sum of its proper divisors (1744634).

3161986 is a wasteful number, since it uses less digits than its factorization.

3161986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54548.

The product of its digits is 7776, while the sum is 34.

The square root of 3161986 is about 1778.1974018652. The cubic root of 3161986 is about 146.7754140682.

The spelling of 3161986 in words is "three million, one hundred sixty-one thousand, nine hundred eighty-six".