6902191 has 4 divisors (see below), whose sum is σ = 6946312. Its totient is φ = 6858072.

The previous prime is 6902183. The next prime is 6902213. The reversal of 6902191 is 1912096.

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 6902191 - 2³ = 6902183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6902101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21825 + ... + 22138.

It is an arithmetic number, because the mean of its divisors is an integer number (1736578).

Almost surely, 2^6902191 is an apocalyptic number.

6902191 is a deficient number, since it is larger than the sum of its proper divisors (44121).

6902191 is a wasteful number, since it uses less digits than its factorization.

6902191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44120.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 6902191 is about 2627.2021239334. The cubic root of 6902191 is about 190.3979746830.

The spelling of 6902191 in words is "six million, nine hundred two thousand, one hundred ninety-one".