6318979 has 4 divisors (see below), whose sum is σ = 6465976. Its totient is φ = 6171984.

The previous prime is 6318967. The next prime is 6318989. The reversal of 6318979 is 9798136.

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 6318979 - 2⁹ = 6318467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 146953 = 6318979 / (6 + 3 + 1 + 8 + 9 + 7 + 9).

It is a Duffinian number.

6318979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6318919) 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, 73434 + ... + 73519.

It is an arithmetic number, because the mean of its divisors is an integer number (1616494).

Almost surely, 2^6318979 is an apocalyptic number.

6318979 is a deficient number, since it is larger than the sum of its proper divisors (146997).

6318979 is a wasteful number, since it uses less digits than its factorization.

6318979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146996.

The product of its digits is 81648, while the sum is 43.

The square root of 6318979 is about 2513.7579437965. The cubic root of 6318979 is about 184.8767525830.

The spelling of 6318979 in words is "six million, three hundred eighteen thousand, nine hundred seventy-nine".