6394679 has 4 divisors (see below), whose sum is σ = 6530784. Its totient is φ = 6258576.

The previous prime is 6394657. The next prime is 6394709. The reversal of 6394679 is 9764936.

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

It is a cyclic number.

It is not a de Polignac number, because 6394679 - 2¹² = 6390583 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 (6394579) 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, 67982 + ... + 68075.

It is an arithmetic number, because the mean of its divisors is an integer number (1632696).

Almost surely, 2^6394679 is an apocalyptic number.

6394679 is a deficient number, since it is larger than the sum of its proper divisors (136105).

6394679 is a wasteful number, since it uses less digits than its factorization.

6394679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136104.

The product of its digits is 244944, while the sum is 44.

The square root of 6394679 is about 2528.7702544913. The cubic root of 6394679 is about 185.6120851320.

The spelling of 6394679 in words is "six million, three hundred ninety-four thousand, six hundred seventy-nine".