6943997 has 4 divisors (see below), whose sum is σ = 6975360. Its totient is φ = 6912636.

The previous prime is 6943991. The next prime is 6944009. The reversal of 6943997 is 7993496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6943997 - 2¹² = 6939901 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6943991) 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, 15347 + ... + 15792.

It is an arithmetic number, because the mean of its divisors is an integer number (1743840).

Almost surely, 2^6943997 is an apocalyptic number.

It is an amenable number.

6943997 is a deficient number, since it is larger than the sum of its proper divisors (31363).

6943997 is a wasteful number, since it uses less digits than its factorization.

6943997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31362.

The product of its digits is 367416, while the sum is 47.

The square root of 6943997 is about 2635.1464854918. The cubic root of 6943997 is about 190.7816094360.

The spelling of 6943997 in words is "six million, nine hundred forty-three thousand, nine hundred ninety-seven".