6930397 has 4 divisors (see below), whose sum is σ = 6938140. Its totient is φ = 6922656.

The previous prime is 6930389. The next prime is 6930409. The reversal of 6930397 is 7930396.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5861241 + 1069156 = 2421^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 6930397 - 2³ = 6930389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6930367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2322 + ... + 4387.

It is an arithmetic number, because the mean of its divisors is an integer number (1734535).

Almost surely, 2^6930397 is an apocalyptic number.

It is an amenable number.

6930397 is a deficient number, since it is larger than the sum of its proper divisors (7743).

6930397 is a wasteful number, since it uses less digits than its factorization.

6930397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 6930397 is about 2632.5647190525. The cubic root of 6930397 is about 190.6569777761.

Subtracting 6930397 from its reverse (7930396), we obtain a palindrome (999999).

The spelling of 6930397 in words is "six million, nine hundred thirty thousand, three hundred ninety-seven".