6408697 has 4 divisors (see below), whose sum is σ = 6687360. Its totient is φ = 6130036.

The previous prime is 6408691. The next prime is 6408709. The reversal of 6408697 is 7968046.

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-6408697 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6408691) 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 3 ways as a sum of consecutive naturals, for example, 139297 + ... + 139342.

It is an arithmetic number, because the mean of its divisors is an integer number (1671840).

Almost surely, 2^6408697 is an apocalyptic number.

It is an amenable number.

6408697 is a deficient number, since it is larger than the sum of its proper divisors (278663).

6408697 is a wasteful number, since it uses less digits than its factorization.

6408697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278662.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 6408697 is about 2531.5404401273. The cubic root of 6408697 is about 185.7476150663.

The spelling of 6408697 in words is "six million, four hundred eight thousand, six hundred ninety-seven".