6945891 has 8 divisors (see below), whose sum is σ = 9560064. Its totient is φ = 4481160.

The previous prime is 6945889. The next prime is 6945929. The reversal of 6945891 is 1985496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6945891 - 2¹ = 6945889 is a prime.

6945891 is a lucky number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6945881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37251 + ... + 37436.

It is an arithmetic number, because the mean of its divisors is an integer number (1195008).

Almost surely, 2^6945891 is an apocalyptic number.

6945891 is a deficient number, since it is larger than the sum of its proper divisors (2614173).

6945891 is a wasteful number, since it uses less digits than its factorization.

6945891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74721.

The product of its digits is 77760, while the sum is 42.

The square root of 6945891 is about 2635.5058338012. The cubic root of 6945891 is about 190.7989533145.

The spelling of 6945891 in words is "six million, nine hundred forty-five thousand, eight hundred ninety-one".