3187664 has 20 divisors (see below), whose sum is σ = 6206820. Its totient is φ = 1585920.

The previous prime is 3187663. The next prime is 3187669. The reversal of 3187664 is 4667813.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 1960000 = 1108^2 + 1400^2 .

It is a super-2 number, since 2×3187664² = 20322403553792, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3187663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4142 + ... + 4850.

It is an arithmetic number, because the mean of its divisors is an integer number (310341).

Almost surely, 2^3187664 is an apocalyptic number.

It is an amenable number.

3187664 is a deficient number, since it is larger than the sum of its proper divisors (3019156).

3187664 is a wasteful number, since it uses less digits than its factorization.

3187664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 992 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 3187664 is about 1785.4030357317. The cubic root of 3187664 is about 147.1716568775.

The spelling of 3187664 in words is "three million, one hundred eighty-seven thousand, six hundred sixty-four".