6840451 has 8 divisors (see below), whose sum is σ = 6976800. Its totient is φ = 6705600.

The previous prime is 6840439. The next prime is 6840461. The reversal of 6840451 is 1540486.

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

It is a cyclic number.

It is not a de Polignac number, because 6840451 - 2⁹ = 6839939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6840461) 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, 13185 + ... + 13693.

It is an arithmetic number, because the mean of its divisors is an integer number (872100).

Almost surely, 2^6840451 is an apocalyptic number.

6840451 is a deficient number, since it is larger than the sum of its proper divisors (136349).

6840451 is a wasteful number, since it uses less digits than its factorization.

6840451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 6840451 is about 2615.4255867832. The cubic root of 6840451 is about 189.8285711354.

The spelling of 6840451 in words is "six million, eight hundred forty thousand, four hundred fifty-one".