6973891 has 4 divisors (see below), whose sum is σ = 7214400. Its totient is φ = 6733384.

The previous prime is 6973877. The next prime is 6973913. The reversal of 6973891 is 1983796.

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 6973891 - 2¹⁷ = 6842819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6973801) 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, 120211 + ... + 120268.

It is an arithmetic number, because the mean of its divisors is an integer number (1803600).

Almost surely, 2^6973891 is an apocalyptic number.

6973891 is a deficient number, since it is larger than the sum of its proper divisors (240509).

6973891 is a wasteful number, since it uses less digits than its factorization.

6973891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240508.

The product of its digits is 81648, while the sum is 43.

The square root of 6973891 is about 2640.8125643445. The cubic root of 6973891 is about 191.0549899687.

The spelling of 6973891 in words is "six million, nine hundred seventy-three thousand, eight hundred ninety-one".