6928491 has 4 divisors (see below), whose sum is σ = 9237992. Its totient is φ = 4618992.

The previous prime is 6928489. The next prime is 6928511. The reversal of 6928491 is 1948296.

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

It is not a de Polignac number, because 6928491 - 2¹ = 6928489 is a prime.

It is a super-3 number, since 3×6928491³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6928421) 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, 1154746 + ... + 1154751.

It is an arithmetic number, because the mean of its divisors is an integer number (2309498).

Almost surely, 2^6928491 is an apocalyptic number.

6928491 is a deficient number, since it is larger than the sum of its proper divisors (2309501).

6928491 is a wasteful number, since it uses less digits than its factorization.

6928491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309500.

The product of its digits is 31104, while the sum is 39.

The square root of 6928491 is about 2632.2026897638. The cubic root of 6928491 is about 190.6394979926.

The spelling of 6928491 in words is "six million, nine hundred twenty-eight thousand, four hundred ninety-one".