3169681 has 2 divisors, whose sum is σ = 3169682. Its totient is φ = 3169680.

The previous prime is 3169643. The next prime is 3169693. The reversal of 3169681 is 1869613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 919681 = 1500^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 3169681 - 2⁹ = 3169169 is a prime.

It is a super-2 number, since 2×3169681² = 20093755283522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3169981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1584840 + 1584841.

It is an arithmetic number, because the mean of its divisors is an integer number (1584841).

Almost surely, 2^3169681 is an apocalyptic number.

It is an amenable number.

3169681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3169681 is an equidigital number, since it uses as much as digits as its factorization.

3169681 is an evil number, because the sum of its binary digits is even.

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

The square root of 3169681 is about 1780.3597950976. The cubic root of 3169681 is about 146.8943816885.

It can be divided in two parts, 316968 and 1, that added together give a square (316969 = 563²).

The spelling of 3169681 in words is "three million, one hundred sixty-nine thousand, six hundred eighty-one".