6545678 has 4 divisors (see below), whose sum is σ = 9818520. Its totient is φ = 3272838.

The previous prime is 6545653. The next prime is 6545687. The reversal of 6545678 is 8765456.

6545678 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1636418 + ... + 1636421.

It is an arithmetic number, because the mean of its divisors is an integer number (2454630).

Almost surely, 2^6545678 is an apocalyptic number.

6545678 is a deficient number, since it is larger than the sum of its proper divisors (3272842).

6545678 is a wasteful number, since it uses less digits than its factorization.

6545678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272841.

The product of its digits is 201600, while the sum is 41.

The square root of 6545678 is about 2558.4522665080. The cubic root of 6545678 is about 187.0617009736.

The spelling of 6545678 in words is "six million, five hundred forty-five thousand, six hundred seventy-eight".