6497979 has 8 divisors (see below), whose sum is σ = 8761680. Its totient is φ = 4283136.

The previous prime is 6497969. The next prime is 6497989. The reversal of 6497979 is 9797946.

It is an interprime number because it is at equal distance from previous prime (6497969) and next prime (6497989).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6497979 - 2⁷ = 6497851 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 4⁸ + 9⁵ + 7⁵ + 9⁵ + 7⁸ + 9⁶ .

6497979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6497929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11902 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (1095210).

Almost surely, 2^6497979 is an apocalyptic number.

6497979 is a deficient number, since it is larger than the sum of its proper divisors (2263701).

6497979 is a wasteful number, since it uses less digits than its factorization.

6497979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24429.

The product of its digits is 857304, while the sum is 51.

The square root of 6497979 is about 2549.1133752738. The cubic root of 6497979 is about 186.6062137717.

The spelling of 6497979 in words is "six million, four hundred ninety-seven thousand, nine hundred seventy-nine".