6420297 has 8 divisors (see below), whose sum is σ = 9218944. Its totient is φ = 3950928.

The previous prime is 6420259. The next prime is 6420307. The reversal of 6420297 is 7920246.

It is a happy number.

6420297 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6420297 - 2⁸ = 6420041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420697) 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, 82273 + ... + 82350.

It is an arithmetic number, because the mean of its divisors is an integer number (1152368).

Almost surely, 2^6420297 is an apocalyptic number.

It is an amenable number.

6420297 is a deficient number, since it is larger than the sum of its proper divisors (2798647).

6420297 is a wasteful number, since it uses less digits than its factorization.

6420297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164639.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 6420297 is about 2533.8304994612. The cubic root of 6420297 is about 185.8596177416.

The spelling of 6420297 in words is "six million, four hundred twenty thousand, two hundred ninety-seven".