3213689 has 2 divisors, whose sum is σ = 3213690. Its totient is φ = 3213688.

The previous prime is 3213659. The next prime is 3213737. The reversal of 3213689 is 9863123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2418025 + 795664 = 1555^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213689 - 2¹² = 3209593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3213619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606844 + 1606845.

It is an arithmetic number, because the mean of its divisors is an integer number (1606845).

Almost surely, 2^3213689 is an apocalyptic number.

It is an amenable number.

3213689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213689 is an equidigital number, since it uses as much as digits as its factorization.

3213689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 3213689 is about 1792.6764906140. The cubic root of 3213689 is about 147.5710889730.

The spelling of 3213689 in words is "three million, two hundred thirteen thousand, six hundred eighty-nine".