6870091 has 4 divisors (see below), whose sum is σ = 7274232. Its totient is φ = 6465952.

The previous prime is 6870089. The next prime is 6870107. The reversal of 6870091 is 1900786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1900786 = 2 ⋅950393.

It is a cyclic number.

It is not a de Polignac number, because 6870091 - 2¹ = 6870089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6870011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202045 + ... + 202078.

It is an arithmetic number, because the mean of its divisors is an integer number (1818558).

Almost surely, 2^6870091 is an apocalyptic number.

6870091 is a deficient number, since it is larger than the sum of its proper divisors (404141).

6870091 is a wasteful number, since it uses less digits than its factorization.

6870091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404140.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 6870091 is about 2621.0858436915. The cubic root of 6870091 is about 190.1023548229.

The spelling of 6870091 in words is "six million, eight hundred seventy thousand, ninety-one".