7068391 has 4 divisors (see below), whose sum is σ = 7710984. Its totient is φ = 6425800.

The previous prime is 7068389. The next prime is 7068421. The reversal of 7068391 is 1938607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1938607 = 11 ⋅176237.

It is a cyclic number.

It is not a de Polignac number, because 7068391 - 2¹ = 7068389 is a prime.

It is a Duffinian number.

7068391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7068301) 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, 321280 + ... + 321301.

It is an arithmetic number, because the mean of its divisors is an integer number (1927746).

Almost surely, 2^7068391 is an apocalyptic number.

7068391 is a deficient number, since it is larger than the sum of its proper divisors (642593).

7068391 is a wasteful number, since it uses less digits than its factorization.

7068391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642592.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 7068391 is about 2658.6445794803. The cubic root of 7068391 is about 191.9140873588.

The spelling of 7068391 in words is "seven million, sixty-eight thousand, three hundred ninety-one".