6399497 has 16 divisors (see below), whose sum is σ = 7620480. Its totient is φ = 5313792.

The previous prime is 6399467. The next prime is 6399509. The reversal of 6399497 is 7949936.

It is not a de Polignac number, because 6399497 - 2⁶ = 6399433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6399427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4454 + ... + 5712.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

Almost surely, 2^6399497 is an apocalyptic number.

It is an amenable number.

6399497 is a deficient number, since it is larger than the sum of its proper divisors (1220983).

6399497 is a wasteful number, since it uses less digits than its factorization.

6399497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its digits is 367416, while the sum is 47.

The square root of 6399497 is about 2529.7227120774. The cubic root of 6399497 is about 185.6586892188.

The spelling of 6399497 in words is "six million, three hundred ninety-nine thousand, four hundred ninety-seven".