3068921 has 2 divisors, whose sum is σ = 3068922. Its totient is φ = 3068920.

The previous prime is 3068911. The next prime is 3068927. The reversal of 3068921 is 1298603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3013696 + 55225 = 1736^2 + 235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3068921 is a prime.

It is a super-2 number, since 2×3068921² = 18836552208482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3068927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1534460 + 1534461.

It is an arithmetic number, because the mean of its divisors is an integer number (1534461).

Almost surely, 2^3068921 is an apocalyptic number.

It is an amenable number.

3068921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3068921 is an equidigital number, since it uses as much as digits as its factorization.

3068921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 3068921 is about 1751.8336108204. The cubic root of 3068921 is about 145.3210642272.

The spelling of 3068921 in words is "three million, sixty-eight thousand, nine hundred twenty-one".