6678397 has 4 divisors (see below), whose sum is σ = 7285536. Its totient is φ = 6071260.

The previous prime is 6678383. The next prime is 6678401. The reversal of 6678397 is 7938766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6678397 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 (6678317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303553 + ... + 303574.

It is an arithmetic number, because the mean of its divisors is an integer number (1821384).

Almost surely, 2^6678397 is an apocalyptic number.

It is an amenable number.

6678397 is a deficient number, since it is larger than the sum of its proper divisors (607139).

6678397 is a wasteful number, since it uses less digits than its factorization.

6678397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607138.

The product of its digits is 381024, while the sum is 46.

The square root of 6678397 is about 2584.2594683971. The cubic root of 6678397 is about 188.3175277588.

The spelling of 6678397 in words is "six million, six hundred seventy-eight thousand, three hundred ninety-seven".