6997939 has 4 divisors (see below), whose sum is σ = 7536256. Its totient is φ = 6459624.

The previous prime is 6997937. The next prime is 6997967. The reversal of 6997939 is 9397996.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6997939 - 2¹ = 6997937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6997937) 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, 269139 + ... + 269164.

It is an arithmetic number, because the mean of its divisors is an integer number (1884064).

Almost surely, 2^6997939 is an apocalyptic number.

6997939 is a deficient number, since it is larger than the sum of its proper divisors (538317).

6997939 is a wasteful number, since it uses less digits than its factorization.

6997939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538316.

The product of its digits is 826686, while the sum is 52.

The square root of 6997939 is about 2645.3617900015. The cubic root of 6997939 is about 191.2743423812.

The spelling of 6997939 in words is "six million, nine hundred ninety-seven thousand, nine hundred thirty-nine".