6681854 has 4 divisors (see below), whose sum is σ = 10022784. Its totient is φ = 3340926.

The previous prime is 6681847. The next prime is 6681877. The reversal of 6681854 is 4581866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4581866 = 2 ⋅2290933.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670462 + ... + 1670465.

It is an arithmetic number, because the mean of its divisors is an integer number (2505696).

Almost surely, 2^6681854 is an apocalyptic number.

6681854 is a deficient number, since it is larger than the sum of its proper divisors (3340930).

6681854 is a wasteful number, since it uses less digits than its factorization.

6681854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340929.

The product of its digits is 46080, while the sum is 38.

The square root of 6681854 is about 2584.9282388492. The cubic root of 6681854 is about 188.3500156645.

The spelling of 6681854 in words is "six million, six hundred eighty-one thousand, eight hundred fifty-four".