3216987 has 12 divisors (see below), whose sum is σ = 4849104. Its totient is φ = 2051280.

The previous prime is 3216979. The next prime is 3216991. The reversal of 3216987 is 7896123.

3216987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3216987 - 2³ = 3216979 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (3216937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7564 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (404092).

Almost surely, 2^3216987 is an apocalyptic number.

3216987 is a deficient number, since it is larger than the sum of its proper divisors (1632117).

3216987 is a wasteful number, since it uses less digits than its factorization.

3216987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570 (or 15567 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3216987 is about 1793.5961083811. The cubic root of 3216987 is about 147.6215525846.

The spelling of 3216987 in words is "three million, two hundred sixteen thousand, nine hundred eighty-seven".